Is knowledge of family history related to psychosocial functioning? Comparison of adolescents living in institutional care and adolescents living with their biological families

We tested adolescents growing up in institutional care and adolescents living with their birth families using the ‘Do you know?’ scale and other measures of psychosocial functioning. We found that children living in group homes knew significantly less of their family history, exhibited more behavioural problems and had a more external locus of control. Moreover, the correlations between self-esteem and knowledge of family history were significantly different between the groups. This may suggest that the contribution of the knowledge of family history to self-esteem is different depending on the quality of family history. We also found a significant correlation between locus of control and behavioural problems for the children in institutional care, but not children living with their birth families, which may indicate that their behavioural problems may partially stem from the sense of lack of control over their lives.     

Forgetting and the mirror effect in recognition memory: concentering of underlying distributions

The mirror effect is a strong regularity in recognition memory: If there are two conditions, A and B, with A giving higher recognition accuracy, then old items in A are recognized as old better than old items in B, and also new items in A are recognized as new better than new items in B. The mirror effect is explained by attention/likelihood theory, which also makes several new, counterintuitive predictions. One is that any variable, such as forgetting, that affects recognition changes the responses to new as well as old stimuli. In terms of underlying distributions, forgetting produces concentering, the bilateral movement of distributions, both new (noise) and old (signal), toward a midpoint. Data from two forced-choice experiments are reported that support the prediction of concentering and other predictions drawn from the theory. It is argued that current theories of memory, which are strength theories, cannot handle these regularities.     

Loneliness, social network size, and immune response to influenza vaccination in college freshmen.

Antibody response to the influenza immunization was investigated in 83 1st-semester healthy university freshmen. Elevated levels of loneliness throughout the semester and small social networks were independently associated with poorer antibody response to 1 component of the vaccine. Those with both high levels of loneliness and a small social network had the lowest antibody response. Loneliness was also associated with greater psychological stress and negative affect, less positive affect, poorer sleep efficiency and quality, and elevations in circulating levels of cortisol. However, only the stress data were consistent with mediation of the loneliness-antibody response relation. None of these variables were associated with social network size, and hence none were potential mediators of the relation between network size and immunization response.