Narrative plausibility: the impact of sequence and anchoring

The perceived plausibility of suspect narratives is hypothesized to be a product of more than logical evaluation. Aspects of the narrative's internal structure, notably the extent to which it follows a canonical (or stereotypical) sequence of events, may influence judged plausibility. Plausibility may also be sensitive to external "anchors" that activate relevant schema. To test these possibilities, variations of two suspect testimonies were created in accordance with the model by Stein and Glenn (1979) of a stereotypical story grammar, and the account by Wagenaar, van Koppen, and Crombag (1993) of narrative anchoring. Subjects rated the narrative account using a perceived plausibility scale developed from pilot work. ANOVA revealed that criminal anchoring in suspect statements, regardless of the crime scenario, has a negative effect on the plausibility level. Similarly, plausibility levels were lower when the statement did not follow a temporal sequence of events. The implications for models of how people judge plausibility are discussed, as are the practical implications for legal contexts.     

What do rooks (Corvus frugilegus) understand about physical contact?

Rooks (Corvus frugilegus) do not use tools, but rapidly solve tests of physical cognition. The authors tested whether rooks understand the concept of physical contact using a task comprising a clear horizontal tube containing a stick with a disk attached to it and a piece of food. The rooks chose which side to pull the stick from to make the food accessible. Two configurations were used, with either the food or disk central along the tube. All 8 rooks solved the food-central configuration, but failed the disk-central configuration. Although they did not demonstrate an understanding of contact, further tests established that they could learn to solve these tasks provided there were salient stick cues. This result may arise because sticks are ecologically important for rooks.     

The role of perception, language, and preference in the developmental acquisition of basic color terms

When learning basic color vocabulary, young children show a selective delay in the acquisition of brown and gray relative to other basic color terms. In this study, we first establish the robustness of this finding and then investigate the extent to which perception, language, and color preference may influence color conceptualization. Experimental tasks were designed to measure different aspects of perceptual color processing (discrimination and saliency), color preference and objective counts of color term frequency in preschool-directed language (books and mothers' speech) were used to compare the acquisition of three groups of colors: primary colors, secondary colors (orange, pink, and purple) that appear at the same time as the primary colors, and secondary colors (brown and gray) that appear late. Although our results suggest that perception does not directly shape young children's color term acquisition, we found that children prefer brown and gray significantly less than basic colors and that these color terms appear significantly less often in child-directed speech, suggesting that color preference, linguistic input, and developing color cognition may be linked.     

How to resist temptation: the effects of external control versus autonomy support on self-regulatory dynamics

Abstract The purpose of the present study (N=80 undergraduate students) was to examine two issues: First, does external control lead to an increase in resistance to temptation more than the use of autonomy support? Second, what are the long‐term effects of these types of educational style? Based on the Personality Systems Interaction (PSI) theory, external control was expected to increase resistance to temptation for those participants who lack initiative and self‐motivation (i.e., state‐oriented participants). Consistent with expectations, resistance to temptation was greater for state‐oriented participants with externally controlled instructions than for individuals who received autonomy‐supportive instructions. This was reflected by their performance on a visual discrimination task during distracter, compared to baseline, episodes. However, external control had negative long‐term effects on state‐oriented participants as indexed by alienation from their own preferences in free‐choice behavior. Action‐oriented participants were less influenced by experimental conditions.     

Evaluating current deficit theories of poor reading: role of phonological processing, naming speed, balance automaticity, rapid verbal perception and working memory

To clarify the nature of cognitive deficits experienced by poor readers, 9-10-yr.-old poor readers were matched against 9 chronological age and 9 younger reading age-matched controls screened and selected from regular classrooms. Poor readers performed significantly more poorly than chronological age-matched peers on digit naming speed, spoonerisms, and nonsense word reading. Poor readers were also significantly poorer than reading age-matched controls on nonword reading but were significantly better than reading age-matched controls on postural stability. Analyses of effect sizes were consistent with these findings, showing strong effects for digit naming speed, spoonerisms, and nonword reading. However, effect size analysis also suggested that poor readers experienced moderate difficulties with balance automatisation but did not show verbal speech perception deficits relative to either control     

Food caching by western scrub-jays (Aphelocoma californica) is sensitive to the conditions at recovery

Western scrub-jays (Aphelocoma californica) cached perishable and nonperishable food items, which they could recover after both short and long retention intervals. When perishable items were always degraded at recovery, jays decreased the number of perishable items cached and increased their caching of nonperishable items, relative to a control group whose caches were always fresh at recovery. Jays reduced the number of nonperishable items cached, however, when highly preferred food items were degraded only after the long retention intervals. The findings are discussed in terms of the role of retrospective and prospective processes in the control of caching.     

Modelling relative motion to facilitate intra-limb coordination

The importance of relative motion information when modelling a novel motor skill was examined. Participants were assigned to one of four groups. Groups 1 and 2 viewed demonstrations of a skilled cricket bowler presented in either 'video' or 'point light' format. Group 3 observed a single point of light pertaining to the 'wrist' of the skilled bowler only. Participants in Group 4 did not receive a demonstration and acted as controls. During 60 acquisition trials, participants in the demonstration groups viewed a model five times before each 10-trial block. Retention was examined the following day. Intra-limb coordination was assessed for the right elbow relative to the wrist in comparison to the model. The demonstration groups showed greater concordance with the model than the control group. However, the 'wrist' group performed less like the model than the 'point light' and 'video' groups, who did not differ from each other. These effects were maintained in retention. Relative motion information aided the acquisition of intra-limb coordination, while making this information more salient (through point lights) provided no additional benefit. The motion of the model's bowling arm was replicated more closely than the non-bowling arm, suggesting that information from the end-effector is prioritized during observation for later reproduction.     

Body image dissatisfaction: gender differences in eating attitudes,self-esteem,and reasons for exercise

Two hundred and thirty-five adolescents completed a questionnaire on the subject of eating attitudes, self-esteem, reasons for exercise, and their ideal versus current body size and shape. As predicted, boys were as likely to want to be heavier as lighter, whereas very few girls desired to be heavier. Only girls associated body dissatisfaction with the concept of self-esteem. Male self-esteem was not affected by body dissatisfaction. Specific reasons for exercise were found to correlate with low self-esteem and disordered eating, regardless of sex. The results are discussed in relation to burgeoning published research in this area.     

Toward a unified account of spacing effects in explicit cued-memory tasks

Memory for repeated items improves when presentations are spaced during study. This effect is found in memory tasks using different types of material, paradigms, and participant populations. Although several explanations have been proposed, none explains the presence of spacing effects in cued-memory tasks for unfamiliar stimuli. Two experiments assessed the spacing effect on a yes-no recognition-memory task using nonwords and words as targets. The main results showed that changing the font between repeated occurrences of targets at study removed the spacing effect for nonwords only. A 3rd experiment using lexical decision showed that the font manipulation reduced repetition priming of nonwords when items were repeated at Lag 0. These results suggest that short-term perceptual priming supports spacing effects in cued-memory tasks for unfamiliar stimuli.     

The Reversal of Lifelong Labeling: An Autoethnography

The periphery belongs to me. I was born and grew up in a poor neighborhood. In common imagery, it evoked the negatively stereotyped image of a place as a poverty and crime heap. Because of my neighborhood, I’ve suffered various forms of strain. A lifelong labeling process has plagued my life, while in many theories of deviance and crime I would be a criminal. Therefore, how did these theories function with me and with my behavior? How has my lifelong labeling influenced my identity? What suggestions does my life experience offer in terms of urban/social policies? Now I’m trying to answer these questions through my autoethnography.