Effects of two levels of stimulus complexity upon hypothesis sampling systems among second and sixth grade children

Groups of second and sixth grade children each solved a series of discrimination-learning problems involving four and eight dimensions that contained blanktrial probes for the S′s hypothesis (H). There were significant effects of grade level on three dependent measures (learning, generating consistent H patterns, sampling locally consistent Hs). Main effects of stimulus complexity were significant on five measures (the three above, rejecting disconfirmed Hs, maintaining confirmed Hs). There were no interactions involving any of these measures. The hypothesis sampling system (Sy) observed in each problem was also determined. Among sixth grade Ss this measure was unaffected by stimulus complexity level. Second grade Ss generated logically structured Sys in 65% of four-dimensional, but only 30% of eight-dimensional problems. They generated stereotyped behaviors or unsystematic sequences of Hs in 70% of eight-dimensional, but only about 35% of four-dimensional problems. Detailed analyses revealed that among second grade Ss good information processors (in terms of four component processes above) usually imposed a logical structure on four-dimensional, but generated unsystematic sequences of Hs in many of eight-dimensional problems. Poor processors generated stereotyped behaviors in both four- and eight-dimensional problems.     

Hypothesis sampling systems among preoperational and concrete operational kindergarten children

Groups of 60 preoperational and 60 concrete operational kindergarten children received stimulus differentiation training either with feedback (experimental groups) or without (control groups), prior to a series of discrimination-learning problems in which a blank-trial probe, used to detect the child's hypothesis, followed each feedback trial. The concrete operational children manifested significantly better performances than the preoperational on seven of eight dependent measures examined. There were also significant differences in favor of the experimental groups on three dependent measures. While the results were generally consistent with predictions derived from Piagetian stage theory, it was suggested that this theory must be elaborated to include a perspective derived from conventional developmental learning theory in order to adequately account for these and other data.     

The use of the position analysis questionnaire in selecting correlates of job performance among mentally retarded workers

The present study investigated the efficiency of various existing measures, mainly psychological tests, for predicting job performance of mentally retarded workers in a sheltered occupational shop. Twenty-two production-related jobs and one nonproduction-related job were analyzed with the Position Analysis Questionnaire resulting in two job attribute clusters. Correlations between 19 predictor variables and 5 criterion variables, which consisted of supervisor ratings of job performance, were then calculated separately for subjects performing preferred jobs in each attribute group. The results indicated that, contrary to past research, existing measures are predictive of performance on some but not all jobs in a sheltered workshop.     

Distance estimates of children as a function of acquisition and response activities

Second and sixth graders (8 and 12 years of age, respectively) experienced a large-scale environment either actively or passively followed by a distance estimation task requiring either active or passive activity. Second graders were most accurate in those conditions where acquisition and response activities were congruent. These children significantly overestimated distances in the passive acquisition-active response condition. Sixth graders were equally accurate across all four experimental conditions. Results are discussed in terms of the complex interaction between acquisition factors and task demands which influence interpretations about spatial representations.     

Self-instructions: Effects of cognitive level and active rehearsal

This research examined the effects of a self-instruction intervention on the relationship between cognitive level and conceptual tempo. Preoperational and concrete operational children received the Matching Familiar Figures Test prior to and after serving in either a no training control group, a content only control group, or a self-instruction group. Children in the content only control group received the same set of self-guiding strategy statements as those in the self-instruction group but without overt rehearsal of the statements. Cognitive level and conceptual tempo were strongly related; preoperational children tended to be classified as impulsive, concrete operational chidlren, as reflective. Although cognitive level predicted overall performance, with concrete operational children being more successful and more reflective than preoperational children, the influence of training was similar for both groups. On posttest, children in the self-instruction groups made more correct responses and were more reflective than children in the other two training groups.     

Overhabituation and dishabituation: Effects of extraversion and amount of training

The Eysenck (1967) hypothesis that introverts have higher levels of cortical activation than extraverts has received support in a number of psychophysiological studies, though there is not complete consistency. The present study extended the habituation paradigm used in some previous work to include an examination of differences between extraverts and introverts during and following long-term overhabituation. Electrodermal activity was recorded while 72 extraverts and 72 introverts were subjected to criterion auditory habituation to a 1000-Hz, 90-db tone, followed by 60, 100, or 140 trials of overhabituation. The overhabituation run was followed by a test stimulus of 7000 Hz and a final repetition of the standard stimulus. Results showed that introverts increased in response frequency with increasing overhabituation exposure, while extraverts showed an increase only from 100 to 140 trials. In addition, the hypothesis that differences in test response amplitude favoring introverts would be eliminated by extended overhabituation training was supported. Specifically, extraverts showed increased responses at 100 and 140 trials, while introverts remained approximately constant across the three conditions. Finally, results supported the Sokolov hypothesis that overhabituation training produces test responses of larger amplitude.     

Verbal and nonverbal maternal controls in hearing mother-deaf child interaction

Investigators of mother-child relations have concluded that mothers of deaf children are more controlling than mothers of hearing children. Excessive maternal control has been linked to inoptimal developmental outcomes, such as child dependence, social immaturity, and submissiveness. In the present study, the verbal and nonverbal controls employed by mothers of deaf preschoolers (3.00–6.75 years) versus mothers of hearing preschoolers (3.00–6.42 years) were evaluated. Subjects were 14 hearing mother-deaf child dyads and 14 hearing mother-hearing child dyads. Each dyad was observed during a 15-minute free-play period and during a 7-minute teaching period. Dependent measures were submitted to appropriate 2 (hearing status) by 2 (task) analysis of variance for repeated measures, followed by post hoc comparisons. The results indicated that the mothers of deaf children: (a) used higher rates of nonverbal controls than the mothers of hearing children, especially during the free-play period; and (b) employed higher rates of verbal controls than the mothers of hearing children during the free-play period, but not during the teaching period. In addition, the interaction tasks exerted differential effects on the two groups of mother-child dyads.     

Information processing in reading-disabled and nondisabled children

Reading disabled and nondisabled children (13-14 years of age) were presented lists of 10 words each at different rates (one word per 1, 2, and 4 sec), and immediately after the last word of each list they recalled the words in any order. Recall of the first few words presented from each list (the primacy effect) was lower in reading-disabled than nondisabled children, and slower presentation rates increased the primacy effect in both groups. These findings suggest that reading-disabled children are not completely failing to use elaborative encoding but are using less effective elaborative encoding than nondisabled readers. With all presentation rates, recall of the last few words (the recency effect) was comparable in both groups, suggesting that older reading-disabled children encode and recognize the stimuli and that elaborative encoding is deficient in reading-disabled in spite of adequate stimulus encoding and recognition.     

II. The comparability of the WISC-R and WAIS among 16-year-old EMR children

Thirty 16-year-old EMR children were administered the WAIS and WISC-R in counterbalance order to determine the comparability of the two assessment instruments. The WAIS was found to yield significantly higher Verbal, Performance, and Full Scale IQ scores. The comparisons of corresponding subtests indicate that all WAIS subtests were significantly higher than the WISC-R except Picture Completion. Correlations between corresponding WAIS and WISC-R IQ scales and subtests, however, were significant. The results suggest differences between the two instruments among children of subnormal intelligence, thus presenting the possibility that a child may be differentially classified based on the selection of the intelligence test.     

The influence of incongruity and preexposure on the familiarity effect in visual selection of children

A consistent finding in the literature concerning visual selection is that Ss will spend more time viewing unfamiliar stimuli than stimuli with which they have been familiarized. In the present experiment, the relationship between the magnitude of this familiarity effect and the level of stimulus incongruity was examined and found to be monotonic and increasing. In addition, amount of stimulus preexposure had no significant effect on the magnitude of the familiarity effect. Furthermore, there was no overall difference in Ss' preference for familiar and unfamiliar stimuli. Results are interpreted as supporting a theory of visual selection based on information-conflict resolution.     

Emotional responsivity to nonveridical heart rate feedback as a function of anxiety

The purpose of the present investigation was to examine the effects of nonveridical heart rate feedback and anxiety on electrodermal responses and verbal reports to emotionally laden stimuli. Forty-eight female subjects were divided into high and low anxious groups on the basis of their Taylor Manifest Anxiety Scale scores and resting level electrodermal activity. All subjects viewed 10 autopsy slides while hearing continuous auditory tones supposedly representing their own heartbeats. Twenty-four subjects heard the tones increase in rate with slide onset. The other 24 subjects heard no change in rate with slide onset. The high resting autonomic activity group responded with significantly larger electrodermal responses to the heart rate feedback-slide combination than the low resting level autonomic activity group. The high autonomic activity group also reported that the slides were significantly more unpleasant than the low autonomic activity group, particularly those slides accompanied by an increase in heart rate feedback. Implications of these findings for a cognitive-visceral model of emotion are discussed.     

Effects of fear of success, fear of failure, type of opponent, and feedback on female achievement performance

Female undergraduates (N = 240) assessed for fear of success (FS) and fear of failure (FF) competed against a male, female, or no opponent (norms) on an alpha-numeric substitution task. After completing one set of trials, subjects arbitrarily received success or failure feedback, then performed again. While there were no significant effects when subject's FS classification was based on total scores from the entire set of four cues used, performance effects were found for Horner's original cue: FS-absent females performed better against a male than a female opponent, whereas the reverse was true for the FS-present subjects. Two of the other FS cues interacted with FF: at low levels of FF, FS-absent subjects performed better than FS-present subjects; for high levels of FF, there were no differences between FS groups. A number of postperformance affect ratings were consistent with theoretical expectations that FS-present females would experience more negative effect over success in achievement contexts than would FS-absent females.     

The effects of humor-induced arousal upon aggressive behavior

The present experiment attempted to reconcile previous results in the area of humor and aggression. It was hypothesized that humor serves two functions, arousal and attentional shift, with regard to its influence on the relation of prior anger arousal and aggression. As a test of this assumption, subjects in the present experiment were subjected to three forms of humor (high arousing, low arousing, nonhumor) after being angered or treated in a neutral manner by a confederate. In an analysis on subsequent aggression toward the confederate, it was found that female subjects reduced their aggression after exposure to low arousing humor while maintaining aggression at a high level for high arousing stimuli. Male subjects were not influenced by humor exposure. Possible reasons for this sex difference are examined in light of the arousal and attentional shift properties of humorous stimuli.     

Imagery, encoding specificity, and prose recall in 6-year-old children

Partial pictures depict only selected portions of prose passages. Partial pictures hypothetically aid retention by inducing young children to generate imagery for nonpictured prose. Results from two hundred eighty-eight 6-year-old children indicated that (a) partial pictures at study facilitate recall, (b) identical study and retrieval prompts facilitate recall, and (c) imagery instructions and training do not affect retention. Partial pictures apparently help children to encode information more efficiently at study, but there is no evidence that young children generate images with the aid of the partial picture cues, nor that they have a retrieval deficit for these images as suggested by M. Ruch and J. Levin.     

The effect of pretraining and feedback on the reasoning of young children

Three experiments are reported in which kindergarten and first-grade children were given one-trial multidimensional reasoning tasks that were modifications of those used by T. C. Toppino (1980, Journal of Experimental Child Psychology, 30, 496–512). In the first two experiments, the nature of the stimulus compounds (partitioned or unitary) was varied in a series of tasks of increasing complexity. First-grade children (Experiment 1) and kindergarten children (Experiment 2) performed extremely well on all of the tasks presented. Experiment 3 was designed to identify factors that contribute to these high levels of performance, relative to those obtained under the conditions used by Toppino (1980). The results indicated that a combination of feedback information and preliminary experience with simple forms of the tasks are sufficient to produce the high performance levels, and that the verbal labeling of stimulus components is not an essential constituent of the training.