Procedural learning across the lifespan: A systematic review with implications for atypical development

This systematic review aimed to investigate procedural learning across the lifespan in typical and atypical development. Procedural learning is essential for the development of everyday skills, including language and communication skills. Although procedural learning efficiency has been extensively studied, there is no consensus yet on potential procedural learning changes during development and ageing. Currently, three conflicting models regarding this trajectory exist: (1) a model of age invariance; (2a) a model with a peak in young adulthood; and (2b) a model with a plateau in childhood followed by a decline. The aims of this study were (1) to investigate this debate on procedural learning across the lifespan by systematically reviewing evidence for each model from studies using the serial reaction time task; and (2) to review procedural learning in autism spectrum disorder (ASD) and specific language impairment (SLI), two developmental disorders characterized by deficits in communication skills, in the light of these models. Our findings on typical development strongly support a model of age-related changes (Model 2a or 2b) and show that mixed findings regarding the developmental trajectory during childhood can be explained by methodological differences across studies. Applying these conclusions to systematic reviews of studies of ASD and SLI makes it clear that there is a strong need for the inclusion of multiple age groups in these clinical studies to model procedural learning in atypical development. Clinical implications of the findings are discussed. Future research should focus on the role of declarative learning in both typical and atypical development.     

Fathering activities during early infancy

Fathering activities of 16 fathers of firstborns were surveyed via questionnaire to assess their involvement in physical caretaking, affective interaction and support of mother through participation in household tasks. Results indicated that student fathers who had previous infant care experience, whose infants were unplanned and whose wives were either employed or attending school spent the most time interacting with their infants. Other variables explored which had little effect on father's interaction time included: formal education, attendance at prenatal clases, infant's sex and method of feeding, family isolation. Fathers spent more time in affective interaction than in physical caretaking. Time spent by fathers in affective interaction was nearly equal to that of mothers, while time spent in physical caretaking was much greater for mothers.     

Self-cognitions,stressful events,and the prediction of depression in children of depressed mothers

In a preliminary effort to integrate cognitive, life stress, and interpersonal approaches to vulnerability to depression, children's cognitions about themselves, their stressful life events, and the interaction of self-cognitions and life events were tested as predictors of depression. Children of normal, medically ill, and bipolar and unipolar depressed mothers were assessed initially and 6 months later for diagnostic status using the Kiddie-SADS interview. As predicted, Piers-Harris self-concept scores and interview-assessed children's stressful life events significantly predicted changes in depression status over the 6-month follow-up. Stressors and the interaction of stressors and self-concept also predicted changes in diagnosis of nonaffective disorders. A self-schema measure of accessibility of negative self-cognitions, known to be mood-dependent, failed to add to the prediction of depression severity. The results are consistent with a model of depression vulnerability that emphasizes cognition about self-worth and self-efficacy as mediators of the impact of stressful events, and we speculate that such self-schemas are acquired in part in the context of parent-child relationships. Recommendations are given for further studies of the acquisition and the mechanisms of self-schemas.This research was supported by an award from the William T. Grant Foundation. The assistance of Cheri Adrian, Dorli Burge, David Gordon, Donald Hiroto, Carol Jaenicke, our research staff, and cooperating agencies is gratefully acknowledged.     

Norms for 10,491 Spanish words for five discrete emotions: Happiness,disgust, anger,fear, and sadness

The discrete emotion theory proposes that affective experiences can be reduced to a limited set of universal “basic” emotions, most commonly identified as happiness, sadness, anger, fear, and disgust. Here we present norms for 10,491 Spanish words for those five discrete emotions collected from a total of 2,010 native speakers, making it the largest set of norms for discrete emotions in any language to date. When used in conjunction with the norms from Hinojosa, Martínez-García et al. (Behavior Research Methods, 48, 272–284, 2016) and Ferré, Guasch, Martínez-García, Fraga, & Hinojosa (Behavior Research Methods, 49, 1082-1094, 2017), researchers now have access to ratings of discrete emotions for 13,633 Spanish words. Our norms show a high degree of inter-rater reliability and correlate highly with those from Ferré et al. (2017). Our exploration of the relationship between the five discrete emotions and relevant lexical and emotional variables confirmed findings of previous studies conducted with smaller datasets. The availability of such large set of norms will greatly facilitate the study of emotion, language and related fields. The norms are available as supplementary materials to this article.     

Development and validation of a brief self-report measure of trauma exposure: the Trauma History Screen

Although information about individuals' exposure to highly stressful events such as traumatic stressors is often very useful for clinicians and researchers, available measures are too long and complex for use in many settings. The Trauma History Screen (THS) was developed to provide a very brief and easy-to-complete self-report measure of exposure to high magnitude stressor (HMS) events and of events associated with significant and persisting posttraumatic distress (PPD). The measure assesses the frequency of HMS and PPD events, and it provides detailed information about PPD events. Test-retest reliability was studied in four samples, and temporal stability was good to excellent for items and trauma types and excellent for overall HMS and PPD scores. Comprehensibility of items was supported by expert ratings of how well items appeared to be understood by participants with relatively low reading levels. In five samples, construct validity was supported by findings of strong convergent validity with a longer measure of trauma exposure and by correlations of HMS and PPD scores with posttraumatic stress disorder (PTSD) symptoms. The psychometric properties of the THS appear to be comparable or better than longer and more complex measures of trauma exposure.     

Integrating multiple cues to depth order at object boundaries

We examined the interaction between motion and stereo cues to depth order along object boundaries. Relative depth was conveyed by a change in the speed of image motion across a boundary (motion parallax), the disappearance of features on a surface moving behind an occluding object (motion occlusion), or a difference in the stereo disparity of adjacent surfaces. We compared the perceived depth orders for different combinations of cues, incorporating conditions with conflicting depth orders and conditions with varying reliability of the individual cues. We observed large differences in performance between subjects, ranging from those whose depth order judgments were driven largely by the stereo disparity cues to those whose judgments were dominated by motion occlusion. The relative strength of these cues influenced individual subjects' behavior in conditions of cue conflict and reduced reliability.     

Narcissism,identification, and longitudinal change in psychological health: Dynamic predictions

The narcissist has been described as “dependent on others to provide confirmation of the grandiose ego ideal” (American Psychiatric Association. (1994). Diagnostic and statistical manual of mental disorders (4th ed.). Washington, DC: Author.). The present study shows how the combination of dependent identification and unhealthy narcissism leads to decreasing psychological health across 42 years of adulthood. Change in psychological health is studied in 156 participants of the Intergenerational Studies, Institute of Human Development, University of California, Berkeley. We predicted that longitudinal decline in psychological health, as assessed by longitudinal hierarchical linear modeling analyses of the California Personality Inventory v3 scale [Gough, H. G., & Bradley, P. (1996). California Psychological Inventory. Palo Alto, CA: Consulting Psychologists Press], would be predicted by the joint presence in early adulthood of maladaptive narcissism [Wink, P. (1992). Three narcissism scales for the California Q-set. Journal of Personality Assessment, 58, 51–66] and defensive identification [Cramer, P. (1991a). The development of defense mechanisms: Theory, research and assessment. New York: Springer-Verlag]. In contrast, we predicted healthy narcissism would be positively related to psychological health throughout adulthood. Predictions were confirmed via regression analyses including interaction terms, and are explained by the insoluble conflict that occurs when narcissistic gratification is dependent on the admiration of others, but the tie to others interferes with independent growth and accomplishment.