Two experiments investigated whether preverbal infants distinguish between humans and mammals. Study 1 found that 7-, 9-, and 11-month-olds distinguished humans from mammals in an object-examination task. Study 2 found that 7-month-olds but not 5-month-olds showed evidence for category discrimination with the 2-dimensional color photos of toy…

This study examined developmental changes in concept formation, rule switching, and perseverative behaviors of children in the WCST by altering visual features of the test and using a new test score--the "zigzag" error score--which shows the number of shifts made between two incorrect concepts or rules. Instead of the original four 3-dimensional…

This experiment investigated relational complexity and relational shift in judgments of auditory patterns. Pitch and duration values were used to construct two-note perceptually similar sequences (unary relations) and four-note relationally similar sequences (binary relations). It was hypothesized that 5-, 8- and 11-year-old children would perform…

Research on children's understanding of emotion has rarely focused on children from nonindustrialised countries, who may develop an understanding at different ages as compared to children reared in industrialised countries. Quechua children from an agro-pastoralist village were given an adapted version of the Test of Emotion Comprehension (TEC) to…

Two studies investigated the influence of age, language, and family background on the development of preschoolers' social cognitive skills. Study 1 examined variability in economically disadvantaged preschoolers' understanding of fantasy and evaluated the relation of age and language to children's skill in this area. Children were shown drawings…

When it comes to the reproductive health behaviors of teens and young adults, far more public attention has focused on women than on men. That's not surprising. After all, men don't actually have the babies. Yet the importance of understanding men's reproductive health behaviors should not be overlooked, given their potential implications for men…

Studies were made of (1) young children's use of body-weight type for processing information about peers, and (2) the development of children's stereotypical knowledge about characteristics associated with body-weight type. For the first study, a measure was developed to assess "body salience," or the degree to which children use weight…

This study compared the influence of two play environments on young children's make-believe object transformation behaviors. One environment contained traditional realistic play props; the other contained nonrealistic objects. Subjects were 32 Caucasian children, 17 boys and 15 girls, between 40 and 73 months of age, from working- or middle-class…

One of the issues facing educators is the increasing number of nontraditional students appearing in the college classroom. Recent conceptualizations of adult reasoning have suggested that there are qualitative differences in reasoning from young to late adulthood. The objective of this study was to examine cognitive differences rather than…

While research provides many examples of preschoolers' overconfidence and overestimation of performance, there has thus far been relatively little investigation of the source of these qualities. Recent research suggests that even 2- and 3-year-old children possess a "theory of mind," and know that they and other people think, know,…

Two studies investigated the origins of message evaluation skills in preschool children. In the first study, 14 preschoolers and 14 second graders were asked to evaluate the informativeness of pictorial messages in a referential communication task in two sessions. Results showed that the younger children overestimated the informativeness of…

The goals and strategies formulated by 30 learning disabled (LD) and 30 non-learning disabled (NLD) males at two age levels (8 to 9 and 11 to 12 years) were analyzed. Subjects were interviewed regarding their strategies and goals in four situations involving peer interactions. They were also videotaped during a role play assessment of social…

Experiencing the loss of a loved one can be one of the most traumatic events in a child's life. Grief resolution must be attained no matter how trivial a loss and it becomes even more important when a child's parent dies. School psychologists need to understand how the age of the child influences his ability to grieve and what behaviors might be…

This study manipulated the relations between target and cue words in two cued-recall experiments with children based on the assumptions that: (1) the target cue relations that are most consistent with a child's semantic memory organization result in the highest levels of recall, and that (2) the optimal target-cue relationships may change with…