“Magic” revisited: Children's responses to apparent violations of conservation

Using a procedure adapted from E. Mermelstein and L. S. Shulman (1967, Child Development, 37, 39–52), kindergarten and third-grade children were exposed to one of two apparent violations of conservation or to a transformation in which conservation was preserved. In the violation conditions, water attained either the same or a higher level in a wider container than it had in a narrower container. The dependent measures were children's (a) predictions of the outcome of the transformation, (b) spontaneous reactions and verbal explanations of the actual outcome, and (c) responses to conventional conservation questions. The findings suggest that children very gradually progress from a stage at which they expect the water level to remain constant and base judgments of quantitative relations on water level alone to a stage at which they view reciprocal compensation and conservation as logically necessary. The findings indicate that, although some third-grade children may have attained the latter stage, many have not.     

Constructing other persons: A limit on the effect

Numerous studies have documented the effect that expectancies have on perceivers' perceptions of targets, but in few of these studies have the targets been aware of the perceivers' expectancies. In the present study, some perceivers were led to believe that their future interaction partners had a cold personality while others held no such expectancy. Orthogonal to this manipulation, some targets were told that their partners expected them to be cold while others received no such information. Results indicate that expectancy confirmation occurs only when perceivers with expectancies interact with naive targets. Targets who were told that the perceiver held an expectancy about them were able to overcome this expectancy. The relevance of these findings to the process of expectancy confirmation is discussed, and some predictions are made about the conditions under which expectancy confirmation will and will not occur.     

Peer-peer interaction among infants and toddlers with extensive daycare experience

Peer-peer interaction among 10–21- and 24–30-month-olds with extensive daycare experience was studied. Thirteen pairs of familiar agemates were formed, and each dyad was observed in a playpen with toys at their daycare center. Adult preparation and various constraints to peer-peer interaction were minimized. The nine behavioral measures included nonsocial, marginally social, and social play categories. The results revealed equivalent amounts of nonsocial behavior for both age groups, and marginally social behavior was not the dominant play activity at either age. Compared with the younger group, the older children engaged in less marginally social activity, more positive social behavior overall, and more sustained sociable interchanges. Neither age group had high levels of antisocial behavior, but the younger children tended to display more than the older. Support was found for the view that marginally social activity functions as a bridge from nonsocial to social behavior.     

Some sources and consequences of career exploration

The present research investigated (a) factors that may influence participation in career exploration, and (b) the role of anxiety in the exploration process. The sample consisted of 161 undergraduate college students. Work-role salience (the importance of work in a person's life) was positively related to participation in self-related and work-related exploration. Self-related exploration was positively related to satisfaction with the occupational decision of low anxiety students and was negatively related to satisfaction among high anxiety students. Furthermore, dissatisfaction with an occupational decision was more likely to stimulate future work-related exploration for low anxiety students than for highly anxious students. The implications of these findings for the career exploration process were discussed.     

Knowledge organization and skill differences in computer programmers

Like experts in other fields, expert computer programmers can recall at a glance far more information relevant to their field than novices can. One explanation for this difference is that experts not only have more information, they have it better organized into meaningful chunks. In this paper, we infer the details of individual programmers' chunks of key programming concepts using the Reitman—Rueter (Cognitive Psychology, 1980, 12(4), 554–581.) technique for inferring tree structures from recall orders. Differences in organizations accompany skill-level differences. Beginner programmers' organizations show a rich variety of common-language associations to these programming concepts; Intermediate programmers show mixtures of programming and common-language associations; and Experts show remarkably similar, but not identical, organizations based clearly on programming knowledge.     

Measurement and interpretation of situational and dispositional attributions

Four problems with the measurement of situational and dispositional causality are reviewed. These are: the assumption that dispositional and situational causality are inversely linked; the diversity of the causes considered within the situational and dispositional categories; the difficulties of differentiating between causes internal and external to the actor; and the low convergent validity of various closed-ended attribution measures. A study reaffirms the lack of convergence among closed-ended measures and between closed and open-ended measures as well. In a second study, subjects' ratings of closed-ended attributions are taken as indicators that a freely chosen to not freely chosen dimension may better represent subjects' attributional thought than the internal/external dimension does. Open-ended data from the convergence study are recoded using this scheme and achieve significantly better convergence with closed-ended data. The implications of this redefinition for solving the various measurement problems are discussed.     

When “reliability” fails,must a measure be discarded?—The case of Kinesthetic Aftereffect

Critics of Kinesthetic Aftereffect (KAE) recommend abandoning it as a personality measure largely because of poor test-retest reliability. Although no test can be valid if lacking true reliability, to discard a measure because of poor retest reliability is an oversimplification of validation procedures. This pitfall is exemplified here by a reexamination of KAE. KAE scores involve measures before (pretest) and after (test) aftereffect induction. Internal analysis of a KAE study showed: Differential bias is present; its locus is the second session pretest; its form makes second-session pretest scores functionally more similar to first- and second-session test scores and functionally more dissimilar to first-session pretest scores. Given this second session bias, the retest correlation tells us nothing about the true reliability of a one-session KAE score. However, if a measure possesses external validity, it must to some degree show true reliability. Based upon a literature review of one-session KAE validity studies, we conclude that one-session KAE scores are valid and hence show true reliability. KAE remains a promising personality measure.     

Laterality differences in speaker and consonant identification in dichotic listening

Two dichotic listening experiments assess the lateralization of speaker identification in right-handed native English speakers. Stimuli were tokens of /ba/, /da/, /pa/, and /ta/ pronounced by two male and two female speakers. In Experiment 1, subjects identified either the two consonants in dichotic stimuli spoken by the same person, or identified two speakers in dichotic tokens of the same syllable. In Experiment 2 new subjects identified the two consonants or the two speakers in pairs in which both consonant and speaker distinguished the pair members. Both experiments yielded significant right-ear advantages for consonant identification and nonsignificant ear differences for speaker identification. Fewer errors were made for speaker judgments than for consonant judgments, and for speaker judgments for pairs in which the speakers were of the same sex than for pairs in which speaker sex differed. It is concluded that, as in vowel identification, neither hemisphere clearly dominates in dichotic speaker identification, perhaps because of minor information loss in the ipsilateral pathways.