The influence of task variation and maintenance tasks on the learning and affect of autistic children

Analyses of autistic children's learning and affect have begun to consider the role of antecedent variables, including the manner with which tasks are sequenced within instructional sessions. Within the context of a simultaneous-treatments design, this experiment evaluated autistic children's affect and rate of task acquisition under three experimental conditions. The conditions were (1) a constant task condition in which only one acquisition task was presented per session; (2) a varied-acquisition-task condition, in which 10 acquisition tasks were randomly interspersed throughout each session; and (3) a varied-with-maintenance-task condition, which randomly interspersed 5 acquisition tasks and 5 which had been previously acquired. The results showed significantly more efficient learning under the varied-maintenance condition, with no consistent differences separating the other two conditions. In addition, observers' ratings of the children's affect showed that the most positive judgments were produced by the varied-maintenance condition. The varied-acquisition condition was next while the constant task condition always produced the least favorable ratings. These findings are discussed in relation to the literature on massed versus distributed practice, stimulus variation, and success-induced motivation. The implications for upgrading the treatment and education of handicapped children are also reviewed.     

Novelty responding and behavioral development in young,developmentally delayed children

This study examined whether or not a measure of information processing ability based on the discrimination of novel and familiar stimuli was related to behavioral development among developmentally-delayed infants. Two samples of handicapped infants were administered multiple measures of visual novelty discrimination and a battery of assessments which were representative of available measures of development in infancy. The results indicated that, as a group, the developmentally delayed infants were capable of discriminating novel and familiar stimuli. Also, correlational analyses indicated that responding to novelty was related to developmental accessment performance in both samples. This finding is consistent with previous data which indicates that novelty response measures are associated with important individual differences in young children.     

Contextual effects in social judgment

Judges were asked to evaluate the overall performance of hypothetical students, given their scores on two examinations. The distribution of total scores was manipulated in order to investigate the loci of contextual effects. The interaction between the two exams was reversed by manipulation of the distribution. When the distribution of total scores was positively skewed, judgments showed a convergent interaction as a function of the two exams; when the distribution was negatively skewed, the interaction was divergent. The data were consistent with the hypothesis that the distribution of total scores affects only the transformation from integrated impressions to overt responses. This transformation (judgment function) was well-described by an extension of range-frequency theory. The finding that the interaction can be manipulated by changing the stimulus distribution has methodological implications for the popular interpretation of interactions or lack thereof. A good model may be improperly rejected or a bad one improperly retained through lack of attention to contextual effects.     

Central auditory processing. VI. Detecting ear dominance by evoked potentials

An electrophysiological method is described for measuring the direction and strength of a subject's ear dominance for pitch using the P3 component of event-related potentials. Results of these experiments reveal that the P3 can be used effectively for these measures in man.     

The effects of self-monitoring on the expressive display of masculinity-femininity

Do self-monitoring processes influence (1) the correspondence between assessed personality and expressive masculinity-femininity, and (2) the cross-channel consistency (face, body, voice) of expressive masculinity-femininity? To answer these questions, 36 male and 36 females completed the Bem Sex-Role Inventory (BSRI) and Snyder's Self-Monitoring Scale, and then were videotaped as teachers. Five groups of naive judges rated these stimulus subjects on expressive masculinity-femininity, basing their respective ratings on: video pictures and voices, just pictures, just faces, just bodies, or just voices. A sixth group of judges rated subjects on physical attractiveness. The results indicated that judged physical attractiveness was significantly correlated with judged masculinity-femininity, with men being judged more masculine and females more feminine the more attractive they were. BSRI femininity correlated strongly with judged masculinity-femininity, and BSRI masculinity, less so. Finally, self-monitoring did prove to moderate the correspondence between personality and expressive behavior, and the cross-channel consistency of masculinity-femininity cues: however, these moderating effects were different for males and females.     

Inferences,affects, and intentions in a model of paranoia

Models of psychopathologies can be construed as modifications to the normal purposive behavior of an organism. The particular elements of purposive behavior to be emphasized here are (1) deriving facts about the environment (inferences), (2) attending to the self's needs, desires, and interests (affects), and (3) choosing directions and goals to fulfill these interests (intentions). A series of processes in a model of paranoia which performs these tasks will be described. We also describe the modifications made by the paranoid processes to the normal processes. A computer simulation has been constructed to test the model.     

Does everybody like a liker?

The primary hypothesis examined was that people giving positive evaluations are themselves regarded as more attractive than when they give negative evaluations. This research tests whether this holds when reciprocity is not at issue. Subjects in six experiments were presented with stimulus persons who varied in the proportion of positive to negative evaluations they gave of various attitude objects (political figures, cafeteria workers, cities, movies, and college courses). Giving predominantly positive evaluations did in fact lead to greater liking of the stimulus person in each experiment. This finding held over (1) audio or written interviews with the stimulus persons, (2) a variety of classes of attitude objects, and (3) both within-subject and between-subject designs. Greater liking for likers occurred even controlling for attitude similarity.     

Warned reaction times of sociopaths

A warned reaction time (RT) task was employed with eight male sociopaths and eight normal male Ss. A warning light appeared at a variable interval preceding a light to which the S responded with a key press. All Ss received both a regular and an irregular series with warning intervals of 1, 2, 4, 8, and 16 sec. In the regular series, blocks of intervals were presented in an ascending order. In the irregular series each interval followed every other interval equally often. Sociopaths obtained reliably slower RTs than did control Ss, showing a constant decrement across all intervals in the two kinds of series.     

Androgyny,sex-typing,and the perception of masculinity-femininity in handwritings

Sex-typed and androgynous subjects rated the similarity of handwritings on masculinity-femininity and also rated the writings on an absolute scale of masculinity-femininity. The variances of sex-typed subjects' ratings were significantly higher than those of androgynous subjects, indicating that sex-typed subjects differentiated more along the dimension. Sex-typed subjects also agreed more highly with other raters and among themselves than did androgynous subjects. Multidimensional scaling of similarity ratings—using nonmetric multidimensional scaling (Kruskal, 1964; Shepard, 1962), and INDSCAL (Carroll & Chang, 1970)—showed interpretable dimensions along which subjects perceived masculinity-femininity. Further scaling solutions indicated again that sex-typed subjects differentiated more strongly along the dimension of masculinity-femininity and weighted the dimension more highly in making their similarity ratings. The data supported the hypothesis that subjects who monitor their own behavior on a given dimension are more sensitive to cues in others relating to that dimension.     

Children use canonical sentence schemas: A crosslinguistic study of word order and inflections

We propose that children construct a canonical sentence schema as a preliminary organizing structure for language behavior. The canonical sentence embodies the typical features of complete clauses in the input language, and serves as a framework for the application of productive and perceptual strategies. The canonical sentence schema offers a functional explanation of word-order and inflectional strategies based on the child's attempts to quickly master basic communication skills in his or her language. The present research explores sensitivity to the canonical sentence form and to word-order and inflectional perceptual strategies for comprehending simple transitive sentences in monolingual children aged 2;0 to 4;4 in four languages: English (ordered, uninflectional), Italian (weakly ordered, weakly inflectional), Serbo-Croatian (weakly ordered, inflectional), Turkish (minimally ordered, inflectional). The results show that children fail to respond systematically to sequences that violate the canonical sentence form of their particular language. They develop distinct word-order and inflectional strategies appropriate to the regularities of their language. The early behavioral emergence of linguistically appropriate canonical sentences and processing strategies suggests a behavioral foundation for linguistic constraints on the surface form of sentences.