A hypothesized need to form and maintain strong, stable interpersonal relationships is evaluated in light of the empirical literature. The need is for frequent, nonaversive interactions within an ongoing relational bond. Consistent with the belongingness hypothesis, people form social attachments readily under most conditions and resist the dissolution of existing bonds. Belongingness appears to have multiple and strong effects on emotional patterns and on cognitive processes. Lack of attachments is linked to a variety of ill effects on health, adjustment, and well-being. Other evidence, such as that concerning satiation, substitution, and behavioral consequences, is likewise consistent with the hypothesized motivation. Several seeming counterexamples turned out not to disconfirm the hypothesis. Existing evidence supports the hypothesis that the need to belong is a powerful, fundamental, and extremely pervasive motivation.

The need to belong: Desire for interpersonal attachments as a fundamental human motivation.

The greater power of bad events over good ones is found in everyday events, major life events (e.g., trauma), close relationship outcomes, social network patterns, interpersonal interactions, and learning processes. Bad emotions, bad parents, and bad feedback have more impact than good ones, and bad information is processed more thoroughly than good. The self is more motivated to avoid bad self-definitions than to pursue good ones. Bad impressions and bad stereotypes are quicker to form and more resistant to disconfirmation than good ones. Various explanations such as diagnosticity and salience help explain some findings, but the greater power of bad events is still found when such variables are controlled. Hardly any exceptions (indicating greater power of good) can be found. Taken together, these findings suggest that bad is stronger than good, as a general principle across a broad range of psychological phenomena.

/pdf/bad-is-stronger-than-good-42gd5eyc1l.pdf

Bad is Stronger than Good

Bad is stronger than good

From social integration to health: Durkheim in the new millennium.

As a social species, humans rely on a safe, secure social surround to survive and thrive. Perceptions of social isolation, or loneliness, increase vigilance for threat and heighten feelings of vulnerability while also raising the desire to reconnect. Implicit hypervigilance for social threat alters psychological processes that influence physiological functioning, diminish sleep quality, and increase morbidity and mortality. The purpose of this paper is to review the features and consequences of loneliness within a comprehensive theoretical framework that informs interventions to reduce loneliness. We review physical and mental health consequences of loneliness, mechanisms for its effects, and effectiveness of extant interventions. Features of a loneliness regulatory loop are employed to explain cognitive, behavioral, and physiological consequences of loneliness and to discuss interventions to reduce loneliness. Loneliness is not simply being alone. Interventions to reduce loneliness and its health consequences may need to take into account its attentional, confirmatory, and memorial biases as well as its social and behavioral effects.

/pdf/loneliness-matters-a-theoretical-and-empirical-review-of-444rlh0w5o.pdf

Loneliness Matters: A Theoretical and Empirical Review of Consequences and Mechanisms

This study addressed the effects of a naturally occurring stressor on components of the immune response. Blood was drawn twice from 75 first-year medical students, with a baseline sample taken one month before their final examinations and a stress sample drawn on the first day of final examinations. Median splits on scores from the Holmes--Rahe Social Readjustment Rating Scale and the UCLA Loneliness Scale produced a 2 X 2 X 2 repeated measures ANOVA when combined with the trials variable. Natural killer (NK) cell activity declined significantly from the first to the second sample. High scorers on stressful life events and loneliness had significantly lower levels of NK activity. Total plasma IgA increased significantly from the first to second sample, while plasma IgG and IgM, C-reactive protein, and salivary IgA did not change significantly.

Psychosocial modifiers of immunocompetence in medical students.

Although various stressors appear to influence herpesvirus infections, the underlying mechanisms have not been studied. A prospective design was used to examine the effects of examination stress and loneliness on the transformation of B lymphocytes in mixed cultures of T and B lymphocytes by Epstein-Barr virus (EBV). Three blood samples were drawn from 42 EBV-seropositive medical students, with the baseline sample taken 1 month before their final examinations, the stress sample drawn on the first day of final examinations, and the third sample taken the first week after their return from summer vacation. A median split on the UCLA Loneliness Scale divided the subjects into high- and low-scoring loneliness groups. There were significant effects for change over trials, with the lowest transformation levels (i.e., more virus required to transform cells) found in the stress sample. There was also a significant main effect for loneliness, in which high loneliness was associated with lower transformation levels. Possible immunological pathways for the observed changes are discussed.

Stress and the transformation of lymphocytes by Epstein-Barr virus

Substantial evidence has implicated Epstein–Barr virus (EBV) in the aetiology of two human neoplasms, nasopharyngeal carcinoma (NPC) and Burkitt's lymphoma1,2. This is supported by the presence of high antibody titres to EBV early antigen and virus capsid antigen3,4, as well as antibody to two viral-associated enzymes, DNase and DNA polymerase5,6. Patients with NPC, particularly the undifferentiated form, are commonly found to have EBV DNA in the tumour2. Ito and others7–10 have presented strong epidemio-logical evidence that phorbol esters are related to the unusual geographic distribution of NPC in southeastern regions of China. There appears to be a close link between the widespread EBV infection of the Asian population and the distinct regional distribution in China of plants that produce diterpene ester11. Naturally occurring phorbol esters are produced by plants of the Euphor-biaceae and Thymelaeaceae, which are used as traditional herbal medicines12. Although it has been established that EBV can infect epithelial cells isolated from NPC as well as certain normal epithelial cells13–15, there has been no in vitro evidence that EBV induces neoplastic transformation in normal human epithelial cells with or without exposure to phorbol esters. We report here evidence that transformation of normal human epithelial cells results from exposure to infectious EBV and that transformation is dependent on the presence of phorbol esters.

Phorbol ester and Epstein-Barr virus dependent transformation of normal primary human skin epithelial cells.

Induction of a deoxyuridine triphosphate nucleotidohydrolase activity in Epstein-Barr virus-infected cells

Functional mapping of the Epstein-Barr virus genome: identification of sites coding for the restricted early antigen, the diffuse early antigen, and the nuclear antigen.

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