The Noticing Hypothesis—an hypothesis that input does not become intake for language learning unless it is noticed, that is, consciously registered (Schmidt, 1990, 2001)—has been around now for about two decades and continues to generate experimental studies, suggestions for L2 pedagogy, conference papers and controversy. To many people, the idea that SLA is largely driven by what learners pay attention to and become aware of in target language input seems the essence of common sense. In the simplest terms, people learn about the things that they pay attention to and do not learn much about the things they do not attend to. Others consider the hypothesis to be undesirably vague, lacking in empirical support, or incompatible with well-grounded theories. In this talk I will review the evidence for the hypothesis, as well the major objections that have been raised against it, paying particular attention to learner characteristics such as motivation, aptitude, and language learning history that affect what learners notice and become aware of when processing L2 input.

http://nflrc.hawaii.edu/PDFs/SCHMIDT%20Attention,%20awareness,%20and%20individual%20differences.pdf

Attention, awareness, and individual differences in language learning

Chapter 2. Attention, awareness, and individual differences in language learning

Implicit skill learning underlies obtaining not only motor, but also cognitive and social skills through the life of an individual. Yet, the ontogenetic changes in humans’ implicit learning abilities have not yet been characterized, and, thus, their role in acquiring new knowledge efficiently during development is unknown. We investigated such learning across the life span, between 4–85 years of age with an implicit probabilistic sequence learning task, and we found that the difference in implicitly learning high vs. low probability events - measured by raw reaction time (RT) - exhibited a rapid decrement around age of 12. Accuracy and z-transformed data showed partially different developmental curves suggesting a re-evaluation of analysis methods in developmental research. The decrement in raw RT differences supports an extension of the traditional 2-stage lifespan skill acquisition model: in addition to a decline above the age 60 reported in earlier studies, sensitivity to raw probabilities and, therefore, acquiring new skills is significantly more effective until early adolescence than later in life. These results suggest that due to developmental changes in early adolescence, implicit skill learning processes undergo a marked shift in weighting raw probabilities vs. more complex interpretations of events, which, with appropriate timing, prove to be an optimal strategy for human skill learning.

The best time to acquire new skills: Age-related differences in implicit sequence learning across the human lifespan

Adult SLA / Cristina Sanz -- Research methodology / Rusan Chen -- Research methodology / Rebecca Adams, Akiko Fujii, and Alison Mackey -- Individual differences / Harriet Wood Bowden, Cristina Sanz, and Catherine A. Stafford -- A cognitive neuroscience perspective on second language acquisition / Michael T. Ullman -- Attention and awareness in SLA / Ronald P. Leow and Melissa A. Bowles -- Input and interaction / Alison Mackey and Rebekha Abbuhl -- Explicitness in pedagogical interventions / Cristina Sanz and Kara Morgan-Short -- Processing instruction / Bill VanPatten -- Content-based foreign language instruction / Heidi Byrnes.

Mind and Context in Adult Second Language Acquisition: Methods, Theory, and Practice

The influence of structure and age on sequence learning was investigated by testing 24 young and 24 older participants for 10 sessions in an alternating serial response time task in which pattern trials alternated with random trials. Individuals encountered lag-2 or lag-3 structure, and learning was measured by the difference (in response time and accuracy) between pattern and random trials. Both ages learned lag-2 structure, but the young learned more than the older participants. Only the young people learned lag-3 structure, and they did so more slowly and to a lesser degree than they learned lag-2 structure. These age deficits in higher order sequence learning after extended practice are consistent with simultaneity theory and with theories positing that age-related deficits in neuromodulation lead to less distinctive representations.

Implicit sequence learning: effects of level of structure, adult age, and extended practice.

Previous studies have demonstrated age-related deficits in implicit learning of higher order sequences in comparisons of college-age and elderly adults (e.g., J. H. Howard & D. V. Howard, 1997). This study examined whether these age deficits begin in middle age. Results showed a reliable age-related deficit in pattern sensitivity in "older" compared with "younger" middle-aged people, and age reliably predicted sensitivity to the sequence by using both speed and accuracy measures. The results are consistent with an age-related decline in a generic cognitive resource as reflected in T. A. Salthouse's (1996) simultaneity mechanism of cognitive aging.

Implicit learning of higher order sequences in middle age

Previous studies have demonstrated age-related deficits in implicit learning of higher order sequences in comparisons of college-age and elderly adults (e.g., J. H. Howard & D. V. Howard, 1997). This study examined whether these age deficits begin in middle age. Results showed a reliable age-related deficit in pattern sensitivity in “older” compared with “younger” middle-aged people, and age reliably predicted sensitivity to the sequence by using both speed and accuracy measures. The results are consistent with an age-related decline in a generic cognitive resource as reflected in T. A. Salthouse’s (1996) simultaneity mechanism of cognitive aging. People have an impressive ability to learn the relationships among objects or events in their environment. Sometimes this knowledge is learned explicitly in that individuals make a conscious effort to learn, are aware of having learned, and can de

BRIEF REPORT Implicit Learning of Higher Order Sequences in Middle Age

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Implicit learning of higher order sequences in middle age

BRIEF REPORT Implicit Learning of Higher Order Sequences in Middle Age