EFFECTS OF WRIST WEIGHTS ON SELF-INJURIOUS AND ADAPTIVE BEHAVIORS

The effects of wrist weights on the self-injurious and adaptive behaviors of a young boy with profound mental retardation were evaluated. Application of wrist weights reduced SIB by 92% and was associated with either increases or stable levels of multiple novel and preexisting adaptive behaviors.     

Voting in Ignorance: The Politics of Smooth-Sounding Names

The purpose of this experiment was to determine whether the attractiveness of political candidates' names would influence voter preferences, both when only the names were known and when politically relevant information was provided. The names and platforms of candidates in an actual election in which victory was attributed to a name effect were used in a straw poll of undergraduate subjects. Results showed a clear name effect when only names were presented. However, abstention was also quite common in this condition. When candidates' issue positions were also described, the name effect faded to nonsignificance. The results highlight the efficacy of relevant information in overcoming spurious influences on decisions.     

Goal Characteristics and Satisfaction: Personal Goals as Mediators of Situational Effects on Task Satisfaction1

This study modeled the process underlying the experience of satisfaction by examining the interrelationships among the task situation, intention characteristics, and satisfaction. The central proposition of the model was that the effect of the situation on satisfaction is fully mediated by the nature and status of one's own intentions that result from that context. The proposed model, in which the task situation indirectly determines satisfaction only through intention characteristics, was compared to a model in which the situation both directly and indirectly determines satisfaction and to a model which contained no intention characteristics. The intention characteristics assessed in this study included their number, valence, value, commitment, probability, and perceived attainment. Two aspects of the task situation were examined: task enrichment and assigned performance goals. A total of 192 subjects were randomly assigned to 1 of 4 conditions according to goal (no goal vs. assigned goal) and task type (enriched vs. unenriched). Intentions and their characteristics were assessed before the task period, and satisfaction with the task was measured afterward. The results provided support for a model in which the task situation and intention characteristics have independent effects on satisfaction.     

Selecting analogous problems: Similarity versus inclusiveness

Students were asked to select one of two analogous problems in order to solve algebra word problems. In Experiment 1, one problem was less inclusive and the other was more inclusive than a test problem. The students judged the complexity and similarity of problems, selected analogous problems, and used the solutions to solve test problems. They performed significantly better on the test problems when given the more inclusive solutions, but used perceived similarity rather than inclusiveness to select analogous problems. The same pattern of results occurred in Experiment 2, in which isomorphic problems replaced the more inclusive problems. The results show that students are deficient in selecting good analogies, both from the same category (Experiment 1) and from a different category (Experiment 2). Students who saw the analogous solutions (Experiment 3) or were majoring in mathematics (Experiment 4) were more likely to select an isomorphic problem over a less inclusive problem, but were not more likely to select a more inclusive over a less inclusive problem.     

Videotaped Confessions: The Impact of Camera Point of View on Judgments of Coercion1

Twenty-four college students viewed one of three videotapes of a mock police interrogation that ended in a confession. In one videotape the camera was focused primarily on the “suspect”; in a second the camera was focused primarily on the “detective”; and in the third the camera was focused on the suspect and detective equally. Subjects in the suspect-focus condition subsequently judged that the confession was elicited by means of a small degree of coercion; subjects in the equal-focus condition judged that it was elicited by means of a moderate degree of coercion; and subjects in the detective-focus condition judged that it was elicited by means of a large degree of coercion. It is argued that the effect of camera point of view on judgments of coercion is mediated by causal attributions. Consistent with this interpretation, camera point of view also had a significant effect on subjects' attributions for the suspect's behavior, with subjects in the suspect-focus condition making the most dispositional attributions and subjects in the detective-focus condition making the least dispositional attributions. Alternative explanations are considered and limitations of the present research are discussed. It is concluded that to the extent that interrogations are videotaped with the camera focused on the suspect, judges and/ or jurors may be biased to perceive a confession as voluntary.     

Word‐to‐picture recognition is a function of motor components mappings at the stage of retrieval

Embodied approaches of cognition argue that retrieval involves the re‐enactment of both sensory and motor components of the desired remembering. In this study, we investigated the effect of motor action performed to produce the response in a recognition task when this action is compatible with the affordance of the objects that have to be recognised. In our experiment, participants were first asked to learn a list of words referring to graspable objects, and then told to make recognition judgements on pictures. The pictures represented objects where the graspable part was either pointing to the same or to the opposite side of the “Yes” response key. Results show a robust effect of compatibility between objects affordance and response hand. Moreover, this compatibility improves participants' ability of discrimination, suggesting that motor components are relevant cue for memory judgement at the stage of retrieval in a recognition task. More broadly, our data highlight that memory judgements are a function of motor components mappings at the stage of retrieval.     

Visual routines for extracting magnitude relations

Linking relations described in text with relations in visualizations is often difficult. We used eye tracking to measure the optimal way to extract such relations in graphs, college students, and young children (6- and 8-year-olds). Participants compared relational statements (“Are there more blueberries than oranges?”) with simple graphs, and two systematic patterns emerged: eye movements that followed the verbal order of the question (inspecting the “blueberry” value first) versus those that followed a left-first bias (regardless of the left value’s identity). Question-order patterns led substantially to faster responses and increased in prevalence with age, whereas the left-first pattern led to far slower responses and was the dominant strategy for younger children. We argue that the optimal way to verify a verbally expressed relation’s consistency with visualization is for the eyes to mimic the verbal ordering but that this strategy requires executive control and coordination with language.     

The influence of adaptation and stochastic fluctuations on spontaneous perceptual changes for bistable stimuli

Spontaneous perceptual change was studied by measuring the probabilities of the first two spontaneous pattern switches as a function of time following the onset of a bistable apparent quartet for which either horizontal or vertical motion is perceived. Contrary to the classical satiation hypothesis (Köhler & Wallach, 1944),differential time-dependent adaptation of the perceived compared with the unperceived motion directions was not necessary to account for the first spontaneous switch. In addition, adaptation of the perceived motion accompanied by recovery from adaptation of the unperceived motion was not necessary to account for the increased probability of the second spontaneous switch. It was concluded that regardless of possible adaptation effects, stochastic fluctuations are necessary for the actual reversal of activation levels that produces the spontaneous switch. When the difference in detector activation is reduced by differential adaptation of competing motion detectors (or by the occurrence of a prior spontaneous pattern change), smaller stochastic fluctuations are sufficient to reverse the relative activation of competing detectors. Thus, adaptation can increase the probability of spontaneous switches without directly causing them.