Metacognitive components of visual search in children

Two studies examined children's increasing ability to analyze tasks in terms of the perceptual features that affect task difficulty. Of particular interest was any understanding that perceptual confusions occur during the search for an object surrounded by objects similar in shape or color to that object. In Study 1, 32 pre-schoolers constructed arrays intended to make the search easy or difficult. They made the search difficult simply by putting many toys into the toy box. In a forced-choice situation, they indicated that task difficulty was influenced by the number of objects and the similarity in color and shape of the targets and the surrounding objects. Study 2 more thoroughly examined knowledge of color and shape confusions, using 96 children from Grades K, 1, 3, and 4, assigned to two age groups. The older children but not the younger ones showed a significant understanding of color and shape confusions. Both age groups understood that performance is affected by a person's interest level and degree of attention to the task. The results were discussed in terms of the accessibility of the children's knowledge under different conditions.     

Proof and Canonical Proof

Certain anti-realisms about mathematics are distinguished by their taking proof rather than truth as the central concept in the account of the meaning of mathematical statements. This notion of proof which is meaning determining or canonical must be distinguished from a notion of demonstration as more generally conceived. This paper raises a set of objections to Dummett's characterisation of the notion via the notion of a normalised natural deduction proof. The main complaint is that Dummett's use of normalised natural deduction proofs relies on formalisation playing a role for which it is unfit. Instead I offer an alternative account which does not rely on formalisation and go on to examine the relation of proof to canonical proof, arguing that rather than requiring an explicit characterisation of canonical proofs we need to be more aware of the complexities of that relation.     

Perceptions of primary family therapy supervisory techniques: A critical incident analysis

This study surveyed a randomly selected group of Approved Supervisors of the American Association for Marriage and Family Therapy (n=275) and their supervisees (n=266) on their perceptions of the primary supervisory technique used in supervisory incidents that had a positive effect on supervisee development. Individual case consultation was the technique most often identified by both supervisors and supervisees.This study was funded in part by grants from the Research Committee of the American Association for Marriage and Family Therapy; the Agricultural Experiment Station, Purdue University; and the School of Liberal Arts and Sciences, Purdue University Calumet.     

Generalization peak shift in rats under conditions of positive reinforcement and avoidance

Rats were trained to discriminate between two click frequencies. One frequency was associated with either variable-interval food reinforcement (Experiment 1) or free-operant avoidance (Experiment 2). The other frequency was associated with the absence of food in Experiment 1 and the absence of shock in Experiment 2. On a click frequency generalization test, the rats in both experiments showed positive peak shift with the shape of the relative gradients being very similar. This is the first reported instance of peak shift in rats when responding was maintained by an avoidance contingency. Nondifferentially trained controls showed that this shift was due exclusively to associative processes, with nonassociative stimulus factors in themselves apparently making no contribution to increased rates at particular stimulus values. These results show the comparability of appetitive and aversive control and support the position that gradient differences do not result from approach versus avoidance per se.     

Continuities in maternal reports and child behaviors over time in hyperactive and comparison groups

Maternal reports, observations of nursery and elementary school behavior, and teacher ratings of problems were available for hyperactive and control children who had participated in a longitudinal study. This paper examines consistencies in maternal reports and child behaviors over time, and their relationship to teacher ratings in elementary school. Maternal reports of infant sleep difficulties were related to maternal ratings of hyperactivity at 41/2 and 61/2 years. Maternal ratings of activity at 41/2 were predictive of 61/2-year ratings of hyperactivity and conduct problems. In addition, behavior in a research nursery at 41/2 predicted teacher ratings of problems and classroom behavior in grade two. Hyperactive preschoolers who left the table most during structured activities were more often out-of-seat and off-task in school. Controls who were more aggressive in the nursery were more disruptive in the classroom. These data indicate continuities in both maternal reports and child behaviors.Collection of follow-up data were supported by Grant No. MA-4505 from the Medical Research Council of Canada to Dr. Campbell and were collected when she was at McGill University and the Montreal Children's Hospital. Portions of these data were presented at the American Psychological Association, Washington, D.C., September 1976.     

Attribution of behavioral intentions to obese and normal-weight stimulus persons

This study examines the relationship between the attribution of traits and the attribution of short-term, situation-specific intentions and probable behaviors, with particular reference to the perception of obese persons. College students performed one of four tasks: (1) Rating photographs of obese and normal-weight female faces for likeability and attractiveness; (2) attributing short-term intentions and probable behaviors to these stimulus persons within the context of briefly described social interactions; (3) judging the situationally determined demand characteristics of the intentions and probable behaviors; or (4) judging the ‘meaning’ of the intentions or behaviors in terms of trait scales. The results demonstrate that although the obese faces were consistently rated significantly less likeable and less attractive than the normal-weight faces, these judgments were paralleled by only a few differences in the situation-specific intentions or behaviors attributed to the two groups of stimulus faces. It is suggested that impression-formation measured in terms of global, dispositional characteristics such as traits cannot be assumed to directly predict many differences in behavioral expectations in specific interpersonal settings. On the basis of the few attributions of intention which did discriminate, an ‘obese personality’ stereotype emerged, consisting either of socially undesirable traits or traits of ambiguous social desirability. The implications of the relationships among traits, intentions and situational demand characteristics for an interactive model of situational vs. personality determinants of expected behavior are discussed.     

Parent-child relationships of adopted adolescents in a psychiatric hospital

This study compared the parent-child relationships of 140 adopted and non-adopted adolescents treated in a psychiatric hospital through examination of information contained in the adolescents' medical records. Specifically, comparisons were made of the mention of parental contribution to the problems precipitating hospitalization, psychiatric restriction of parental visits to hospitalized offspring, and referral of parents to an adjunct parents' group. Data were gathered by uninformed research assistants, from the hospital charts of adolescents who had already been discharged from the hospital. Statistical analysis of the data yielded the following results. Adoptive parents were significantly more frequently restricted in their visits to their children. In addition, they were also more likely to have been involved in the precipitants to hospitalization and to have been referred subsequently for adjunctive treatment. It was concluded that parent-child relations may be more problematic among hospitalized adopted, as compared with non-adopted , adolescents. It was also suggested that psychiatric bias concerning "typical" adoptive family dynamics might have contributed to the observed differences.