The generalization of deferred imitation in enculturated chimpanzees (Pan troglodytes)

Deferred imitation of object-related actions and generalization of imitation to similar but not identical tasks was assessed in three human-reared (enculturated) chimpanzees, ranging in age from 5 to 9 years. Each ape displayed high levels of deferred imitation and only slightly lower levels of generalization of imitation. The youngest two chimpanzees were more apt to generalize the model's actions when they had displayed portions of the target behaviors at baseline, consistent with the idea that learning is more likely to occur when working within the "zone of proximal development." We argue that generalization of imitation is the best evidence to date of imitative learning in chimpanzees. Electronic Publication     

Phonological sensitivity and the acquisition of new words in children

Two studies are reported which aimed to examine the relationship between phonological sensitivity and the acquisition of new words that systematically differed in the familiarity of their sound structures. In the first study measures of phonological sensitivity, phonological short-term memory, vocabulary, and nonverbal ability were administered to forty-one 5-year-old children. Phonological sensitivity was related to the paired-associate learning of phonologically unfamiliar words, but not to the learning of familiar words. In the second study a group of 14 nonreading 5-year-old children received phonological sensitivity training. A control group was trained in semantic categorization. After the training, the phonological sensitivity group did perform better on measures of letter knowledge and phonological sensitivity (rhyme and first-sound categorization) and appeared to learn phonologically unfamiliar words more easily. The findings of both studies suggest that phonological sensitivity can support the acquisition of novel words.     

Test of the cross-cultural generalizability of a model of sexual harassment

Sexual harassment research has been primarily limited to examination of the phenomena in U.S. organizations; attempts to explore the generalizability of constructs and theoretical models across cultures are rare. This study examined (a) the measurement equivalence of survey scales in U.S. and Turkish samples using mean and covariance structure analysis and (b) the generalizability of the L. F. Fitzgerald, F. Drasgow, C. L. Hulin, M. J. Gelfand, and V. J. Magley (1997) model of sexual harassment to the Turkish context using structural equations modeling. Analyses used questionnaire data from 336 Turkish women and 455 women from the United States. The results indicate that, in general, the survey scales demonstrate measurement equivalence and the pattern of relationships in the Fitzgerald et al. model generalizes to the Turkish culture. These results support the usefulness of the model for explaining sexual harassment experiences in a variety of organizational and cultural contexts.     

Linking theory of mind and central coherence bias in autism and in the general population

Three experiments investigated whether 2 characteristic aspects of the psychological profile of autism, theory-of-mind deficits and weak central coherence, might be functionally related. Experiment 1 showed that in the general population, performance on a proposed test of theory of mind was inversely related to speed on the Embedded Figures Test, a measure of central coherence bias. Experiments 2 and 3 confirmed that poor theory-of-mind performance was linked to weak central coherence among typically developing children and among children with autism; however, the correlations between these measures were reliable only after accounting for differences in individuals' verbal mental ages. This pattern of results is interpreted in terms of a relationship between individual differences in theory of mind and central coherence bias, a relationship that is separate from any developmental differences in these domains.     

Phenotypic, genetic, and nonshared environmental parallels in the structure of personality: a view from the multidimensional personality questionnaire

How closely do observed, phenotypic personality structures correspond with underlying, genetic, and environmental personality structures? This question was addressed using data from 2,490 pairs of twins from the Minnesota Twin Registry, who completed A. Tellegen's (1982) Multidimensional Personality Questionnaire (MPQ). Phenotypic, additive genetic, and nonshared environmental correlations were computed among the MPQ's eleven primary scales. Principal component analyses of all three matrices revealed three broad, higher-order components that were readily interpreted as negative emotionality, positive emotionality, and constraint. The components from all three matrices were highly comparable, suggesting that the observed, phenotypic structure of personality corresponds closely with the underlying, etiological structure of personality.     

Conceptual structure and social functions of behavior explanations: beyond person--situation attributions

The traditional approach to studying behavior explanations involves treating them as either person causes or situation causes and assessing them by using rating scales. An analysis of people's free-response behavior explanations reveals, however, that the conceptual distinctions people use in their explanations are more complex and sophisticated than the person-situation dichotomy suggests. The authors, therefore, introduce a model of the conceptual structure of folk behavior explanations (the network of concepts and assumptions on which explanations are based) and test it in 4 studies. The modes and features of behavior explanations within this conceptual structure also have specific social functions. In 2 additional studies, the authors demonstrate that people alter distinct features of their explanations when pursuing particular impression-management goals and that listeners make inferences about explainers' goals on the basis of these features.     

The effects of approach and avoidance motor actions on the elements of creative insight

The authors propose that the nonaffective bodily feedback produced by arm flexion and extension informs individuals about the processing requirements of the situation, leading to the adoption of differential processing styles and thereby influencing creativity. Specifically, the authors predicted that arm flexion would elicit a heuristic processing strategy and bolster insight processes, whereas arm extension would elicit a systematic processing strategy and impair insight processes. To test these predictions, the authors assessed the effects of these motor actions on 3 central elements of creative insight: contextual set-breaking, restructuring, and mental search. As predicted, in 6 experiments, arm flexion, relative to arm extension, facilitated insight-related processes. In a 7th experiment, arm extension, relative to arm flexion, facilitated analytical reasoning, supporting a cognitive tuning interpretation of the findings.     

Deconstructing dependency in a five-factor world: a meta-analytic review

Meta-analysis of studies assessing the relation between interpersonal dependency test scores and five-factor model (FFM) domain scores revealed that dependency scores are positively correlated with FFM Neuroticism and Agreeableness scores and negatively correlated with FFM Extraversion, Openness, and Conscientiousness scores. The magnitudes of these correlations were all in the small-to-moderate range, and comparable score intercorrelations were obtained when participants' dependency levels were assessed by means of a trait dependency questionnaire, dependent personality disorder questionnaire, or dependent personality disorder interview. These findings have implications for researchers' efforts to deconstruct dependency into its basic trait elements and for the dimensional approaches to personality disorders being considered for future versions of the Diagnostic and Statistical Manual of Mental Disorders.