The influence of language on theory of mind: a training study

This study investigated the role of language in the development of theory of mind. It was hypothesized that the acquisition of the syntactic and semantic properties of sentential complements would facilitate the development of a representational theory of mind. Sixty preschoolers who failed false belief and sentential complement pretests were randomly assigned to training on false belief, sentential complements, or relative clauses (as a control group). All the children were post-tested on a set of different theory of mind tasks, sentential complements and relative clauses. The main findings were that the group trained on sentential complements not only acquired the linguistic knowledge fostered by the training, but also significantly increased their scores on a range of theory of mind tasks. In contrast, false belief training only led to improved theory of mind scores but had no influence on language. The control group, trained on relative clauses, showed no improvement on theory of mind posttests. These findings are taken as evidence that the acquisition of sentential complements contributes to the development of theory of mind in preschoolers.     

New heads for Freud's hydra: psychoanalysis in Los Angeles

This paper describes the transplantation of psychoanalysis from Europe to Los Angeles and the similarities and differences in followers, cultural attitudes, institutional organization, and patient symptoms. Psychoanalysis in both places attracted psychiatrists, psychologists, social workers, artists, writers, and movie people, all committed to "modernism" and cultural change. But special American conditions created greater institutional rigidity, medicalization, and a more diffuse patient symptomatology centered on the maternal relationship. Such conditions also fostered bitter disputes over modifications of psychoanalytic theory and practice which have only recently become less acute as the status of psychoanalysis has declined in America.     

Relations of trauma exposure with current religiousness and spirituality

Many theorists posit that religiousness/spirituality (RS) may change after trauma. However, empirical findings regarding RS following trauma are inconclusive. The present study examined the relationship between potentially traumatic events (PTEs) and current RS by considering the cumulative effect of PTEs and multiple dimensions of RS. In our sample of 245 undergraduates (60% female, 79% White), there were no differences in RS between participants who did and did not have PTEs. When analysed as a continuous variable, the number of PTEs was positively correlated with many RS dimensions (i.e., daily spiritual experiences, religious strain, religious comfort, provident and challenging God images, belief in God) but not all (i.e., organised religious involvement, belief in afterlife, benevolent God image). These results suggest that PTEs relate distinctly to different aspects of RS and that examining multiple dimensions of RS may be a more informative way of studying this association.     

Discriminant validity of the Conners’ scales for ADHD subtypes

Differential diagnosis and treatment of children with Attention-Deficit/Hyperactivity Disorder (ADHD) remains difficult and controversial, particularly when children present with concomitant academic and behavior problems. Describing a sample of 184 chil-dren referred for evaluation in a university-affiliated outpatient pediatric clinic, this study subsequently examined the discriminant validity of the Conners’ parent and teacher rating scales for ADHD subtypes with and without comorbid conditions. Although discriminant analyses suggest several Conners’ subscales help differentiate subtypes, multimethod evaluations using a variety of data sources are necessary for accurate identification and classification of the disorder with and without comorbid conditions. These data were previously reported at the 107^th Annual Convention of the American Psychological Association, Boston, Massachusetts. The authors express gratitude to Ross D. Crosby, Ph.D., Director of Biomedical Statistics and Methodology at the Neuropsychiatrie Research Institute, for his pre-submission review of the article.     

Aging and intraindividual variability in performance: analyses of response time distributions

It has been suggested that older adults are more variable in their performance because they are more prone to lapses of either attention or intention. In the present experiment, 9 young and 9 older adults each performed nearly 2000 trials of a same-different judgment task. As expected, older adults were slower and more variable than young adults. When the age-related difference in speed was taken into account, however, the older adults were, if anything, less variable than the young adults. When younger and older adults' RT distributions were analyzed using quantile-quantile plots and by fitting ex-Gaussian and Weibull functions, there was no consistent evidence that older adults' distributions were more skewed than young adults', as would be predicted by age-related increases in lapses of attention or intention. Importantly, there was a positive, linear relation between RT and intraindividual variability, and the same relation was observed both within subjects (practice increased speed and reduced variability) as well as between subjects (regardless of age, slower individuals were more variable). Thus, the present results suggest that there may be a general law governing the relation between average RT and variability, and that the greater performance variability of older adults primarily reflects their greater average RTs.     

Personality Development from Age 12 to 25 and its Links with Life Transitions

During adolescence and young adulthood, individuals show personality changes and experience various life transitions. Whereas personality might affect the timing of life transitions, life transitions might also induce personality maturation. We examined Big Five personality maturation from age 12 to 25 using a 9-year longitudinal study of Dutch youths from two cohorts (n₁ = 683, M_ageT1 = 12.70; n₂ = 268, M_age T1 = 16.87). We linked personality maturation to the incidence and timing of four transitions: first romantic relationship, leaving the parental home, first job, and first cohabitation or marriage. Results indicated increases in mean levels, rank-order stabilities and profile stability of personality between age 12 and 25, which were largely replicated across the cohorts. Very few associations between personality and life transitions existed. However, higher mean-level Extraversion predicted leaving the parental home and starting the first romantic relationship, an earlier age when starting the first job, and an earlier average timing of transitions. Regarding social investment effects, we only found that those who never experienced a romantic relationship at age 25 decreased, while those who did increased in profile stability over time. These results suggest that personality consistently matures during adolescence and young adulthood and that higher Extraversion predict greater readiness for new steps towards adulthood.