Representation of two geometric features of the environment in the domestic chick (<Emphasis Type="Italic">Gallus gallus</Emphasis>)

We report experiments based on a novel test in domestic chicks (Gallus gallus), designed to examine the encoding of two different geometric features of an enclosed environment: relative lengths of the walls and amplitude of the corners. Chicks were trained to search for a food reward located in one corner of a parallelogram-shaped enclosure. Between trials, chicks were passively disoriented and the enclosure was rotated, making reorientation possible only on the basis of the internal spatial structure of the enclosure. In order to reorient, chicks could rely on two sources of information: the relative lengths of the walls of the enclosure (associated to their left-right sense order) and the angles subtended by walls at corners. Chicks learned the task choosing equally often the reinforced corner and its rotational equivalent. Results of tests carried out in novel enclosures, the shapes of which were chosen ad hoc (1) to induce reorientation based only on the ratio of walls lengths plus sense (rectangular enclosure), or (2) to induce reorientation based only on corner angles (rhombus-shaped enclosure), suggested that chicks encoded both features of the environment. In a third test, in which chicks faced a conflict between these geometric features (mirror parallelogram-shaped enclosure), reorientation seemed to depend on the salience of corner angles. These results shed light on the elements of the environmental geometry which control spatial reorientation, and broaden the knowledge on the geometric representation of space in animals.     

Alcohol-related motivational tendencies in hazardous drinkers: assessing implicit response tendencies using the modified-IAT

This study examined the utility of an implicit measure of cognitive associations, the Implicit Association Test (IAT; ), to assess alcohol-related approach dispositions. Forty-seven hazardous drinkers completed a modified IAT procedure that assessed the relation between alcohol and behavioral categories (i.e., approach and avoid). Participants completed a series of individual difference measures before an alcohol cue exposure task in which they anticipated alcohol consumption. Results indicate that the modified IAT is associated with binge drinking episodes, perceived difficulty controlling alcohol use, and appetitive responses to alcohol cues. Findings are discussed in terms of the potential value of this measure to assess alcohol-related memory associations among those whose alcohol use puts them at risk for harm.     

Perseverative responding in a violation-of-expectation task in 6.5-month-old infants

In the present research, 6.5-month-old infants perseverated in a violation-of-expectation task designed to examine their reasoning about width information in containment events. After watching a familiarization event in which a ball was lowered into a wide container, the infants failed to detect the violation in a test event in which the same ball was lowered into a container only half as wide as the ball (narrow-container test event). This negative result (which was replicated in another experiment) was interpreted in terms of a recent problem-solving account of infants' perseverative errors in various means-end tasks (Aguiar, A., & Baillargeon, R. (2000). Perseveration and problem solving in infancy. In H. W. Reese (Ed.), Advances in child development and behavior (Vol. 27, pp. 135-180). San Diego, CA: Academic Press). It was assumed that the infants in the present experiments (1) did not attend to the relative widths of the ball and container in their initial analysis of the narrow-container test event, (2) categorized the event as similar to the familiarization event shown on the preceding trials, and (3) retrieved the expectation they had formed for that event ("the ball will fit into the container"), resulting in a perseverative error. This interpretation was supported by additional experiments in which different modifications were introduced that led to non-perseverative responding, indicating that 6.5-month-old infants could detect the violation in the narrow-container test event. The present findings are important for several reasons. First, they provide the first demonstration of perseverative responding in a violation-of-expectation task. Second, they make clear the breadth and usefulness of the problem-solving account mentioned above. Finally, they add to the evidence for some degree of continuity between infants' and adults' problem-solving abilities.     

Representing others' actions: just like one's own?

Previous research has shown that observing others' actions can affect individual performance of the same actions. In the present study, we developed a new paradigm to investigate whether and how complementary actions at the disposal of another agent are represented and influence one's own actions. A spatial compatibility task was distributed among two people so that each participant took care of one of two responses. The identical task was performed alone and alongside another participant. There was a spatial compatibility effect in the group setting only. It was similar to the effect obtained when one person took care of both responses. This result suggests that one's own actions and others' actions are represented in a functionally equivalent way.     

Functional analysis and treatment of self-injurious behavior in young children a summary of 30 cases

The assessment and treatment of self-injurious behavior (SIB) has received much attention in the literature; however, few studies have focused on early intervention for this behavior. In the current study, functional analyses with developmentally appropriate modifications were conducted in an outpatient clinic with 30 children (aged 10 months to 4 years 11 months) to assess SIB and problem behavior in its early stages. The reported mean age of SIB onset was 17 months, and head banging was the most prevalent topography. Functional analyses identified sources of reinforcement for SIB in 62.1% of cases; with the inclusion of all forms of problem behavior, sources of reinforcement were identified for 87.5% of cases. Function-based treatments were developed for 24 cases, with functional communication training prescribed most often (70.8% of cases). Implications of these findings for the development of early intervention programs for SIB are discussed.     

Effects of teacher-directed versus student-directed instruction on self-management of young children with disabilities

In this study, students worked independently by setting goals, selecting assignments, and recording and evaluating their results after receiving one of two different types of self-management training. During teacher-directed training, the teacher set goals, assigned work, and recorded and evaluated results for students. During student-directed training, students performed those tasks themselves. The results indicated that students engaged in the self-management behaviors more frequently during independent work following student-directed instruction than following teacher-directed instruction.     

The effects of road traffic noise and meaningful irrelevant speech on different memory systems

To explore why noise has reliable effects on delayed recall in a certain text-reading task, this episodic memory task was employed with other memory tests in a study of road traffic noise and meaningful but irrelevant speech. Context-dependent memory was tested and self-reports of affect were taken. Participants were 96 high school students. The results showed that both road traffic noise and meaningful irrelevant speech impaired recall of the text. Retrieval in noise from semantic memory was also impaired. Attention was impaired by both noise sources, but attention did not mediate the noise effects on episodic memory. Recognition was not affected by noise. Context-dependent memory was not shown. The lack of mediation by attention, and road traffic noise being as harmful as meaningful irrelevant speech, are discussed in relation to where in the input/storing/output sequence noise has its effect and what the distinctive feature of the disturbing noise is.     

Mothers' Overreactive Discipline and Their Encoding and Appraisals of Toddler Behavior

The relations of observed overreactive discipline with mothers' tendencies to notice negative, relative to positive, child behavior (preferential negative encoding), and mothers' negative appraisals of neutral and positive child behavior (negative appraisal bias), were examined in mothers of toddlers. The mothers rated both their own children's and unfamiliar children's behavior. Negative appraisal bias with respect to mothers' own (but not unfamiliar) children was related to mothers' overreactivity, independent of child misbehavior. Overreactivity was not related to mothers' preferential negative encoding either of their own or of unfamiliar children's behavior. However, in the case of mothers' own children, preferential negative encoding moderated the relation between negative appraisal bias and overreactive discipline, such that the negative appraisal bias-overreactivity relation was significant only in the context of high preferential negative encoding.     

Self Psychology, Dreams and Group Psychotherapy: Working in the Playspace

This paper presents one leadership style within a self-psychological approach to working with dreams in group psychotherapy. It stresses an empathic attunement, the creation of safety, and an experience-near playful relationship. Playful is not used lightly here. It is used in the spirit of Winnicott's intermediate space where a mother suspends questions of what is real or not real and what is me and not me. Freud's analogy to a playspace forms a metaphor for the creation of a special atmosphere in a group, or for that matter in individual work as well, that encourages exploration, risk taking, and vulnerability. Working with dreams in this playspace deepens the curative process, not only for the dreamer, but for the entire group.     

The Embodiment of Birth

This paper rejects dualism between mind and body toview the self as an embodied biological entity. Rather thanseeing the body operating by passive mechanisms as Descartesargues, it holds it actively moves in and even defines its world. Carrying this perspective to medicine presents an attempt toincorporate or work with internal processes of the body; it issensitive to how patients identify with their bodies. Thecurrent discussion over the extent to which women should try tohave natural childbirths provides a concrete example of thedifferences between mechanistic and embodied approaches tomedicine.