Abstract: Maintaining perceptual experiences in visual working memory (VWM) allows us to flexibly accomplish various tasks, but some tasks come at a price. For example, comparing VWM representations to novel perceptual inputs can induce inadvertent memory distortions. If these distortions can persist, they may explain why everyday memories often become unreliable after people perform perceptual comparisons (e.g., eyewitness testimony). Here, we conducted two experiments to assess the consequences of perceptual comparisons using real-world objects that were temporarily maintained in VWM (n = 32) or recalled from visual long-term memory back into VWM (n = 30). In each experiment, young adults reported systematic memory distortions following perceptual comparisons. These distortions increased in magnitude with the delay between encoding and comparisons and were preserved when memories were retrieved again a day later. These findings suggest that perceptual comparisons play a mechanistic role in everyday memory distortions, including situations where memory accuracy is vital. (PsycInfo Database Record (c) 2023 APA, all rights reserved).

Abstract: Secondary crashes occur within the spatial and temporal impact area of primary crashes, resulting in traffic delays and safety problems. While most existing studies focus on the likelihood of secondary crashes, predicting the spatio-temporal location of secondary crashes could offer valuable insights for implementing prevention strategies. This includes guiding the deployment of emergency response measures and determining appropriate speed limits. The main objective of this study is to develop a prediction method for the spatial and temporal locations of secondary crashes. A hybrid deep learning model SSAE-LSTM is proposed by combining stacked sparse auto-encoder (SSAE) and long short-term memory network (LSTM). Traffic and crash data on the California I-880 highway covering the period of 2017-2021 are collected. The identification of secondary crashes is performed by the speed contour map method. The time and distance gaps between primary and secondary crashes are modeled using multiple 5-minute interval traffic variables as inputs. Multiple models are developed for benchmarking purposes, including PCA-LSTM, which incorporates principal component analysis (PCA) and LSTM, SSAE-SVM, which incorporates SSAE and support vector machine (SVM), and back propagation neural network (BPNN). The performance comparison indicates that the hybrid SSAE-LSTM model outperforms the other models in terms of both spatial and temporal prediction. In particular, SSAE4-LSTM1 (with 4 SSAE layers and 1 LSTM layer) demonstrates superior spatial prediction performance, while SSAE4-LSTM2 (with 4 SSAE layers and 2 LSTM layers) excels in temporal prediction. A joint spatio-temporal evaluation is also conducted to measure the overall accuracy of the optimal models over different permitted spatio-temporal ranges. Finally, practical suggestions are provided for secondary crash prevention.

Abstract: We explored how individual and age-related differences in working memory (WM) capacity affected subsequent long-term memory (LTM) retrieval. Unlike past studies, we tested WM and LTM not only for items, but also for item–color bindings. Our sample included 82 elementary school children and 42 young adults. The participants performed a WM task with images of unique everyday items presented sequentially at varying set sizes in different colors. Later, we tested LTM for items and item–color bindings from the WM task. The WM load during encoding constrained LTM, and participants with a higher WM capacity retrieved more items in the LTM test. Even when accounting for young children’s poor item memory by considering only the items that they did remember, they exhibited an exacerbated difficulty with remembering item–color bindings in WM. Their LTM binding performance, however, as a proportion of remembered objects, was comparable to that of older children and adults. The WM binding performance was better during sub-span encoding loads, but with no clear transfer of this benefit to LTM. Overall, LTM item memory performance was constrained by individual and age-related WM limitations, but with mixed consequences for binding. We discuss the theoretical, practical, and developmental implications of this WM-to-LTM bottleneck.

Abstract: Memory has been well-established as a predictor of mathematics achievement in child development. Nevertheless, empirical evidence remains elusive on the unique role of the different forms of memory and their specific mechanisms as predictors of mathematics development. Therefore, in this study, the role of visuospatial short-term memory, visuospatial working memory, verbal short-term memory, and verbal long-term memory was investigated at three key stages of the development of mathematics (5–6 years, 6–7 years, 7–8 years), as well as their interactions across development. The relation between the different memory types and informal and formal mathematics was also studied. The findings of this study provide empirical support for a shift in the relation between different memory types and mathematics achievement over development with: 1) visuospatial short-term memory predicting informal mathematics achievement at the age of 5–6 years; 2) visuospatial working memory predicting informal and formal mathematics achievement at the age of 6–7 years; and 3) verbal short-term memory predicting formal mathematics achievement at the age of 7–8 years. These shifts clearly appear consistent with children’s mathematics curriculum content over time and the requirements of mathematics acquisition at specific stages in development. With these findings, the unique role of various forms of memory in the development of mathematics and the timeframe in which they play a crucial part is highlighted, which should be taken into consideration for future research and possible intervention studies in children’s mathematics achievement.

Abstract: Visuo-spatial working memory is one of the main domain-general cognitive mechanisms underlying mathematical abilities and their development in children. However, if visuo-spatial working memory involves different processes and components, then the term 'mathematics' refers to a broad concept that includes multiple domains and skills. The aim of this present study was to investigate the relationship between different visuo-spatial working memory components and several mathematical abilities in a sample of third- to fifth-grade Italian children. To assess the relationships between different visuo-spatial working memory components and different mathematical abilities, we relied on Network Analysis (NA). Results indicate that some but not all visuo-spatial working memory components are associated with some mathematical abilities.

Abstract: When remembering over the short-term, long-term knowledge has a large effect on the number of correctly recalled items and little impact on memory for order. This is true, for example, when the effects of semantic category are examined. Contrary to what these findings suggest, Poirier et al. in 2015 proposed that memory for order relies on the level of activation within long-term networks. Importantly, although their view has been criticized, they showed that manipulating semantic associations led to item migrations that were atypical. In this article, we show that similar migrations can be obtained with another knowledge-based factor: orthographic neighborhood. In three experiments, we manipulated the orthographic neighborhood of to-be-recalled items. The latter is a sublexical factor; as such, it is much less likely than semantic relatedness to involve demand characteristics or grouping strategies. The first experiment established that the neighborhood manipulation produced the pattern of item migrations previously observed with semantic relatedness, confirming that the migration effect can generalize to other variables. The last two experiments suggested that migrations were due to the features shared across list items rather than to item co-activation (as in Poirier et al.). The results were successfully modeled by calling upon the Revised Feature Model, where recall depends on selecting a retrieval candidate based on the features of the cueing information. Overall, our findings underline the usefulness of a model where retrieval is determined by relative distinctiveness and underline that multiple mechanisms can lead to order errors in recall. (PsycInfo Database Record (c) 2023 APA, all rights reserved).

Abstract: Working- and long-term memory are often studied in isolation. To better understand the specific limitations of working memory, effort is made to reduce the potential influence of long-term memory on performance in working memory tasks (e.g., asking participants to remember artificial, abstract items rather than familiar real-world objects). However, in everyday life we use working- and long-term memory in tandem. Here, our goal was to characterize how long-term memory can be recruited to circumvent capacity limits in a typical visual working memory task (i.e., remembering colored squares). Prior work has shown that incidental repetitions of working memory arrays often do not improve visual working memory performance – even after dozens of incidental repetitions, working memory performance often shows no improvement for repeated arrays. Here, we used a whole-report working memory task with explicit rather than incidental repetitions of arrays. In contrast to prior work with incidental repetitions, in two behavioral experiments we found that explicit repetitions of arrays yielded robust improvement to working memory performance, even after a single repetition. Participants performed above chance at recognizing repeated arrays in a later long-term memory test, consistent with the idea that long-term memory was used to rapidly improve performance across array repetitions. Finally, we analyzed inter-item response times and we found a unique pattern that only emerged after the array was repeated (significant slowing after 2-3 items); thus, we propose that inter-item response times may be useful for examining the coordinated interaction of visual working- and long-term memory in future work.

Abstract: Objective Human working memory is impaired when individuals are exposed to high altitudes, however, whether the capacity of visual working memory is affected remains unclear. This study combined a lateralized change detection task and event-related potentials analysis to explore changes in visual working memory capacity among individuals who emigrated from a low-altitude environment to Tibet (a high-altitude environment). Materials and methods Thirty-five college students were recruited from Tibet University as the high-altitude (HA) group, and thirty-six low-altitude (LA) students were enrolled from South China Normal University (sea level) as the LA group. We measured participants' contralateral delay activity (CDA) under different memory loads. Results ERP component analysis showed that both the HA and LA groups reached an asymptote at memory load four. However, the contralateral and ipsilateral activity of the HA and LA groups shows different patterns. The results showed a significantly larger contralateral activity for the LA group than for the HA group at memory load one (p = 0.04, Cohen's d = 0.52) and load three (p = 0.02, Cohen's d = 0.61). Additionally, we found marginally larger contralateral activity at memory load four for the LA group (p = 0.06, Cohen's d = 0.47), but not at memory load two (p = 0.10) or load five (p = 0.12). No significant differences were observed for ipsilateral activity. In addition, we observed that the HA group performed larger ipsilateral activity than contralateral activity under each memory load, compared with the LA group. Conclusion These findings demonstrated that the attentional resource of long-term HA exposure is more captured by task-irrelevant information, potentially due to impaired inhibitory control, which makes it difficult for them to exclude the interference of task-irrelevant information.

Abstract: Although working memory (WM) is usually defined as a cognitive system coordinating processing and storage in the short term, in most WM models, memory aspects have been developed more fully than processing systems, and many studies of WM tasks have tended to focus on memory performance. The present study investigated WM functioning without focusing exclusively on short-term memory performance by presenting participants with an n-back task on letters, n varying from 0 to 2, each letter being followed by a tone discrimination task involving from one to three tones. Predictions regarding the reciprocal effects of these tasks on each other were motivated by the time-based resource-sharing (TBRS) theoretical framework for WM that assumes the temporal sharing of attention between processing and memory. Although, as predicted, increasing the n value had a detrimental effect on tone discrimination in terms of accuracy and response times, and increasing the number of tones disrupted speed and accuracy on n-back performance, the overall pattern of results did not perfectly fit the TBRS predictions. Nonetheless, the main alternative models of WM do not seem to offer a complete account. The present findings point toward the need to use a larger range of tasks and situations in designing and testing models of WM. (PsycInfo Database Record (c) 2023 APA, all rights reserved).

Abstract: Working memory capacity (WMC) has received a great deal of attention in cognitive psychology partly because WMC correlates broadly with other abilities (e.g., reading comprehension, second-language proficiency, fluid intelligence), and thus seems to be a critical aspect of cognitive ability. However, it is still rigorously debated why such correlations occur. Some theories posit a single ability (e.g., attention control, short-term memory capacity, controlled memory search) as the primary reason behind WMC’s predictiveness, whereas others argue that WMC is predictive because it taps into multiple abilities. Here, we tested these single- and multifaceted accounts of WMC with a large-scale (N = 974) individual-differences investigation of WMC and three hypothesized mediators: attention control, primary memory, and secondary memory. We found evidence for a multifaceted account, such that no single ability could fully mediate the relation between WMC and higher-order cognition (i.e., reading comprehension and fluid intelligence). Further, such an effect held regardless of whether WMC was measured via complex span or n-back.

Abstract: Ageing is associated with less detailed memory recall. We tested whether poorer representational fidelity across perception, short-term and long-term memory (STM/LTM) are among the earliest signs of cognitive ageing. Our paradigm probed target-lure object mnemonic discrimination and precision of object-location binding. In a lifespan sample, cognitive deficits were observed in midlife when complex, detailed stimulus representations were required for perceptual and short/long-term Forced Choice mnemonic discrimination. A continuous metric of object-location source memory combined with computational modelling demonstrated that errors in short- and long-term memory in middle-aged adults were largely driven by a loss of precision for retrieved memories, not necessarily by forgetting. On a trial-by-trial basis, the fidelity of item and spatial information was more tightly bound in long- as opposed to short-term memory with this association being unaffected by ageing. Standard neuropsychological tests without demands on memory quality were less sensitive to age effects than memory precision. Perceptual discrimination predicted mnemonic discrimination across tasks. Neuropsychological proxies for prefrontal executive functions correlated with short-term, but not long-term, memory fidelity. Conversely, neuropsychological indicators of hippocampal integrity correlated with mnemonic discrimination and precision of both STM and LTM, suggesting partially dissociable mechanisms of inter-individual variability in short- and long-term memory fidelity.

Abstract: Caffeine is believed to improve a person's memory because a person can be awake and affect brain performance. The purpose of this study was to examine the effect of caffeine on short-term memory. This study uses a posttest control group design where two groups will be given treatment, and one group will not be given treatment. The participants of this study were 30 college students (Mage equals 19.4; SD equals 1.27) in Jabodetabek who consumed caffeine at least three times a week. Data collection using a digit span test adapted from Wechsler Adult Intelligence Scale (WAIS). The results showed that caffeine positively affected short-term memory in college students. Decaffeine has more effect on short-term memory than caffeine and mineral water. This research implies that college students can consume decaffeine to improve their short-term memory.

Abstract: Listeners often operate in complex acoustic environments, consisting of many concurrent sounds. Accurately encoding and maintaining such auditory objects in short-term memory is crucial for communication and scene analysis. Yet, the neural underpinnings of successful auditory short-term memory (ASTM) performance are currently not well understood. To elucidate this issue, we presented a novel, challenging auditory delayed match-to-sample task while recording MEG. Human participants listened to “scenes” comprising 3 concurrent tone pip streams. The task was to indicate, after a delay, whether a probe stream was present in the just-heard scene. We present three key findings: First, behavioural performance revealed faster responses in correct vs. incorrect trials as well as in ‘probe present’ vs ‘probe absent’ trials, consistent with ASTM search. Second, successful compared to unsuccessful ASTM performance was associated with a significant enhancement of event-related fields and oscillatory activity in the theta, alpha, and beta frequency ranges. This extends previous findings of an overall increase of persistent activity during short-term memory performance. Third, using distributed source modelling, we found these effects to be confined mostly to sensory areas during encoding, presumably related to ASTM contents per-se. Parietal and frontal sources then became relevant during the maintenance stage, indicating that effective STM operation also relies on ongoing inhibitory processes suppressing task irrelevant information. In summary, our results deliver a detailed account of the neural patterns that differentiate successful from unsuccessful ASTM performance in the context of a complex, multi-object auditory scene.

Abstract: Attentional control - also called executive functions or cognitive control - refers to our ability to maintain and implement a goal and goal-relevant information in the face of distraction. There is growing evidence that attentional control cannot be established as a psychometric construct with the measures used so far. This asks for other ways of measuring attentional control. Early research has used structural equation modeling to extract attentional control from working-memory tasks (i.e., tasks used to measure the temporary maintenance and manipulation of information) and short-term memory tasks (i.e., tasks used to measure the temporary maintenance of information). Attentional control was first modeled as the residual variance of working memory after controlling for short-term memory. Second, it was modeled as the common factor across working-memory and short-term memory measures, with higher loadings for working-memory measures. After a systematic search, we found three datasets in which both models could be systematically tested. Moreover, we determined the robustness of the results by bootstrapping 5000 correlation matrices from the original correlation matrix and by estimating both models using these simulated correlation matrices. Across the datasets, the models could be successfully estimated, but they were not fully and exactly replicated. Moreover, all these model estimations were not robustly observed when the 5000 simulated correlation matrices were used. Therefore, attentional control could not be reliably extracted from working-memory tasks at the latent-variable level. These findings further strengthen the case against a psychometric construct of attentional control, increasing the challenges in the conceptualization of this construct.

Abstract: Long short-term memory network (LSTM) has become a popular in-depth learning network method to predict the state of health (SOH) of lithium-ion batteries. The LSTM method without optimizing hyperparameters can easily lead to low accuracy in battery SOH prediction models. An improved LSTM method based on sparrow search algorithm (SSA) is proposed for SOH prediction of lithium-ion batteries. A new health indicator (HI) - the kurtosis at the peak of the charging probability density function (PDF) curve is extracted and used it as input to the SOH model to achieve accurate prediction of battery SOH. The experimental results show that the prediction accuracy of the LSTM model optimized by the sparrow algorithm is better than that of the unoptimized mode. When the training set only accounts for 20 % of the total data, the root-mean-square error (RMSE) of LFP battery prediction results is within 0.85 % and the maximum absolute error (AE) is less than 2.5 %, while the RMSE of NCA battery SOH prediction results is within 0.7 % and the maximum AE is less than 2.0 %. SSA-LSTM can accurately predict battery SOH in situations with limited training data and has good robustness.

Abstract: Previous work has shown that visual working memory performance is higher for recognizable and meaningful stimuli relative to meaningless, but physically matched, stimuli (e.g., Asp et al., 2021). Here, we test whether the benefit for meaningful stimuli arises due to active storage in working memory or can, at least in part, be explained by reliance on other more durable memory traces, such as long-term memory. We manipulated meaningfulness using ambiguous Mooney faces (Exp. 1) and objects (Exp. 2) vs. scrambled versions of the same stimuli. Although items were repeated 10x more often in the high interference condition than the low interference condition, we found equivalent objective and subjective effects of meaningfulness at high levels of proactive interference, suggesting that persistent passive long-term memory traces do not play a critical role for the meaningfulness advantage in working memory tasks.

Abstract: Short-term memory, working memory, and other executive functions are related to short-term recall (short-term memory), information manipulation (working memory), and complex cognitive processing. Common tasks include serial recall, manipulation with recall (e.g., n-back), inhibitory control (e.g., Go/No-go), and planning (e.g., Tower of London). Acute alcohol consumption can result in poorer recall, altered spatial recognition, changes in attentional allocation, and reduced planning, task-switching, and cognitive flexibility. However, it is possible that the type of task used may result in equivocal outcomes. The purpose of this scoping review is to describe the different tasks used in the study of the effect of alcohol on short-term memory, working memory, and other executive functioning tasks. Nineteen studies were included with between-group, within-group repeated measures, and mixed factorial designs with various alcohol dosages. Findings of the included studies suggested that the impact of acute alcohol consumption on short-term memory, working memory, and other executive functioning tasks is equivocal. Discrepancies existed between visuospatial and verbal tasks and between array versus sequential recall tasks. Cognitive load may not be significantly affected but could be important in complex sequencing tasks. Deliberation times and response inhibition appear to be negatively affected, possibly due to thinking time rather than reduced performance. This suggests that most studies have not separated short-term memory, working memory, and other executive functions. These modalities may be differently affected by alcohol consumption. In general, further research using consistent, specific methods is required to enhance comparability of studies and clearly demarcate the effects of alcohol on these processes.

Abstract: Phonological working memory impairments associated with attention-deficit/hyperactivity disorder (ADHD) have garnered interest due to reliable evidence of moderate- to large-magnitude between-group (ADHD vs. control) effects, as well their association with a wide range of secondary impairments. However, previous studies are methodologically limited in their ability to identify potential underlying mechanistic processes. This study aimed to examine converging and diverging patterns of omission, intrusion, and transposition errors to parse-specific mechanistic processes that contribute to ADHD-related phonological working memory deficits.Fifty-four children with ADHD (45 males, nine females) and 65 typically developing (TD; 50 males, 15 females) children aged 8-12 (M = 9.62, SD = 1.52) years completed a computer-based phonological working memory task that aurally presented a random series of jumbled numbers and one letter. Children were instructed to verbally respond by stating the numbers from least to greatest, followed by the letter. Children's incorrect responses were coded as errors of omission, intrusion errors, or transposition errors.Results indicated a significant moderate-magnitude between-group difference in total omission and transposition errors, and a significant small-magnitude between-group difference in total intrusion errors. An examination of specific error types supported evidence of ADHD-related deficits in reordering and updating central executive processes.Collectively, these findings contribute to a more precise understanding of underlying mechanistic processes in ADHD-related working memory deficits and hold potential to inform the development of novel working memory metrics and working memory-based interventions for ADHD. (PsycInfo Database Record (c) 2023 APA, all rights reserved).

Abstract: ABSTRACT The argument for a female advantage in word list learning is often based on partial observations that focus on a single component of the task. Using a large sample (N = 4403) of individuals 13–97 years of age from the general population, we investigated whether this advantage is consistently reflected in learning, recall, and recognition and how other cognitive abilities differentially support word list learning. A robust female advantage was found in all subcomponents of the task. Semantic clustering mediated the effects of short-term and working memory on long-delayed recall and recognition, and serial clustering on short-delayed recall. These indirect effects were moderated by sex, with men benefiting more from reliance on each clustering strategy than women. Auditory attention span mediated the effect of pattern separation on true positives in word recognition, and this effect was stronger in men than in women. Men had better short-term and working memory scores, but lower auditory attention span and were more vulnerable to interference both in delayed recall and recognition. Thus, our data suggest that auditory attention span and interference control (inhibition), rather than short-term or working memory scores, semantic and/or serial clustering on their own, underlie better performance on word list learning in women.

Abstract: The study evaluates the extent of online teaching among instructors at the selected universities in the Philippines. The study utilized 120 faculty members from the private and state universities in the Philippines. Participants of this study were classified according to gender, type of residence, number of years in teaching, highest educational attainment, and department. The researchers used quantitative and qualitative research designs. The quantitative research design utilized a Likert -type data instrument and statistical tools used were mean, t-test, and Analysis of Variance (ANOVA). The study was submitted and evaluated for its contents by the experts in the qualitative method. Moreover, qualitative data and information will be gathered through the interview to be conducted by the researchers themselves. The qualitative design process was guided by the qualitative and qualitative experts and was based on a qualitative framework by Creswell (2012). Results revealed that online teaching using JEL was "very high." The challenges derived from the qualitative views and statements experienced by the respondents were the following: (1) interrupted and unstable signal, (2) technical issues in the middle of using, (3) unpreparedness of the respondents as they shared that they need more training and hands-on, and (4) frequent maintenance of JEL.

Abstract: Does a single bout of activity engagement have short-term effects on cognition in daily life? Using a smartphone-based ambulatory assessment design, this study examined the duration of the effects of three types of activities (i.e., sociocognitive, passive leisure, and physical activities) on working memory performance. For seven times per day (i.e., approximately every 2 hr) over 15 days, 150 healthy older adults (aged 65-91 years) in Switzerland reported their present activities and completed working memory assessments. In an examination of within-person concurrent associations, results from a multilevel model showed that passive leisure activities were negatively associated with working memory. Extending this to time-lagged dynamics, results from multilevel vector autoregression models showed that the negative effect of passive leisure activities and a positive effect of sociocognitive activities on working memory performance appeared 6 hr later and faded out completely by 8 hr later. Follow-up analyses showed that the time-lagged effects of activity engagement were evident among relatively younger individuals with lower levels of formal education. In sum, our findings suggest that a single bout of activity engagement has an impact on cognitive performance as quickly as 6 hr. In line with the "use it or lose it" hypothesis, our findings highlight the importance of continuous and active engagement in sociocognitive activities in older age. (PsycInfo Database Record (c) 2023 APA, all rights reserved).

Abstract: Developmental language disorder (DLD) is an impairment that disturbs the ability to acquire and make use of native language. The exact cognitive and neuronal brain underpinnings of the disorder are still a matter of investigation.The relationship between the audiovisual phonemic short-term memory and particular language abilities was examined among 7–9 year-old children with DLD as well as in a gender, age, and IQ-matched control group. Children were assessed with a standard language battery and the Stanford–Binet scale (SB5). Subsequently, they performed a short-term memory task requiring immediate recall of sequences composed of syllables presented audiovisually.There were lower levels of audiovisual phonemic memory among children with DLD. They performed significantly worse than matched typically developing (TD) children in the experimental task and their performance was correlated with scores obtained in each language subtest. In contrast, we did not find between-group differences in visual short-term operational memory measured on the SB5 scale.The present experiment replicated previous findings about short-term phonemic memory impairment in the DLD population. We found that memory impairment also occurs even if phoneme information is presented simultaneously in the auditory and visual domains. It appears that non-linguistic spatial cues accompanying phoneme stimuli do not overcome phonemic short-term memory impairment.