Independent Development of Imagination and Perception of Fitts' Law in Late Childhood and Adolescence

Recent neurophysiological and behavioral research suggests perception-action systems are tightly coupled. Accordingly, Fitts' law has been observed when individuals execute, perceive, and imagine actions. Developmental research has found that (a) children demonstrate Fitts' law in imagined actions and (b) imagined movement time (MT) becomes closer to actual MT as age increases. However, action execution, imagination, and perception have yet to be assessed together in children. The authors investigated how imagined and perceived MTs related to actual MTs in children and adolescents. It was found that imagined MTs were longer than execution MTs were. Perception MTs were lower than execution MTs for children and more consistent with execution MTs for adolescents. These results suggest potential mechanistic differences in action imagination and perception.     

Sociomoral reasoning,perceptions of parenting and self‐reported delinquency in adolescents

This study considers the relationships between perceived parenting, sociomoral reasoning, and self‐reported delinquency in a sample of high school adolescents. Correlational analysis revealed that moral reasoning was associated with a consistent disciplinary style. Self‐reported delinquency was positively related to a number of the parenting variables but negatively correlated with moral reasoning. Separate analysis for males and females showed similar patterns for self‐reported delinquency, with the exception that moral reasoning was negatively correlated with attachment and supervision among females. The most significant predictors of delinquency scores were parenting variables, with moral reasoning also playing a role for males. A factor analysis of the perceived parenting measure revealed two factors. The first factor reflected a warm, inductive and involved style of parenting with the second reflecting a parenting style characterized by physical punishment. Self‐reported delinquency was negatively significantly associated with Factor 1, and positively related to Factor 2. There were also differences in the self‐reported delinquency scores of the top and bottom quartiles of Factor 1 scores. These support the conclusion that a parental style that is perceived to be warm, involved and inductive is associated with lower levels of delinquency in adolescence. Copyright © 2001 John Wiley & Sons, Ltd.     

Social competence and sociomoral reasoning in young offenders

This study considers the relationship between social competence, sociomoral reasoning, and self‐reported delinquency in a sample of convicted young offenders. Correlations across these factors showed that social competence was significantly related to delinquency. This finding was corroborated by multiple regression, which showed that social competence was the most significant predictor of self‐reported delinquency. Copyright © 1999 John Wiley & Sons, Ltd.     

Analysing uncertainty in location memory: issues in the design of spatial database systems

Future generations of databases will store increasing amounts of pictorial and other visuo‐spatial material. Among other methods, these will require retrieval techniques which exploit memory for the location of objects in pictures stored within the database. Experiments are reported in which subjects recalled the location of an object in a picture and, as an expression of their uncertainty, a range of locations within which they were sure the target fell. This is analogous to a database query method in which users specify a range of values for a location as a means of overcoming the unavoidable problem of imprecision in the expression of an analogue quantity. This paper investigates the psychological issues which allow us access to the potential value of this method in the design of pictorial databases. Although recall confidence (defined by the width of the range of responses given by the subject) is shown to be correlated with recall accuracy, the results demonstrate a trend in which subjects systematically overestimate the precision of their recall. A further experiment examines the extent to which this effect can be manipulated by instructions to the subjects. This shows that instructions aimed at reducing overconfidence produce a counterintuitive response. Subjects remain spuriously overconfident about the accuracy of responses which are in fact incorrect, but additionally they demonstrate a reduced confidence for accurate recalls. Overall, these experiments indicate that while confidence ranges can communicate useful information about the accuracy of location memory, this is less than that expected because subjects are poor at assessing the accuracy of their own recalls and are subject to a range of biases when attempting to do so. Implications for the design of retrieval systems are discussed. Copyright © 1999 John Wiley & Sons, Ltd.     

Do Unilateral Right and Left Face Contractions Induce Positive and Negative Emotions? A Further Test of Schiff and Lamon's (1989) Hypothesis

Schiff and Lamon (1989) proposed that unilateral face contractions induce positive or negative changes in emotion depending on the side of contraction; support for this proposal, however, has been mixed. In a new test, 40 right-handed and 38 left-handed men performed four alternating face contractions (LRLR or RLRL) and, after each one, completed a different version of the Depression Adjective Checklist (Lubin, 1994). A repeated-measures ANCOVA failed to reveal any significant effect of side of face contraction or handedness on direction of emotion change. Instead, regardless of side of contraction, the subjects' negative emotional state increased significantly across the four contractions with the degree of change being significantly related to the subjects' reported level of difficulty in holding the contraction irrespective of whether the more difficult side was the left or the right.     

Ethnicity,gender, and evaluations of aggression

In order to investigate some of the ways in which ethnicity and gender influence interpretations of aggression, 363 Anglo and Hispanic university students responded to a questionnaire soliciting their evaluations of aggression in three situations. Consistent with previous research and with the stereotype of machismo, Hispanics, particularly Hispanic males, were more likely to endorse some aggressive behaviors than Anglos. However, the same pattern of gender influences emerged for both ethnic groups. As predicted, males were more aggressive and more supportive of fighting back and punishing an aggressor than females, whereas females were more likely to show self-control about aggression and to endorse restraint. Respondents, particularly males, said that they would behave more aggressively toward a male, and they encouraged a male to behave more aggressively. These results are consistent with the social constructionist view that performance and evaluations of aggression are largely influenced by cultural factors. © 1995 Wiley-Liss, Inc.     

The impact of perceived experience on likelihood judgments for self and others: an experimental approach

This study examines the effect of an experimental manipulation of perceived experience on self and others' likelihood ratings for a set of relatively commonplace misfortunes. Participants were randomly assigned to a condition in which they were asked whether they had ever experienced the events (designed to induce higher perceived experience) or whether they had done so frequently, typically, etc. (designed to induce lower perceived experience). The manipulation led to increases in ratings of both perceived self‐likelihood and others' likelihood, in ease of imagining the outcome and recall of a past occurrence, and to decreases in perceived control over the events in the higher perceived experience condition. The increases in ease of imagining mediated the impact of manipulated experience on comparative likelihood whereas the decreases in perceived control did not. There was little evidence that event controllability moderated the impact of experience on comparative likelihood for these events. Copyright © 2006 John Wiley & Sons, Ltd.     

Acquiring Explicit Grammatical Knowledge Using the Spanish Verbs <Emphasis Type="Italic">Ser</Emphasis> and <Emphasis Type="Italic">Estar</Emphasis> as Examples

The role of explicit and implicit acquisition of grammatical rules in second language learning was examined by assessing high school students performance after several years of study on the correct use of the Spanish verbs ser and estar. These two verbs are essentially equivalent in use to the English verb “to be,” but there is a complex set of statements that specifies when each is to be used. A 100-item two-choice test in which students from several different high schools receiving instruction in the explicit principles of these two Spanish verbs or receiving immersion training in which no instruction in their grammatical principles was given were examined for the following five factors: (a) general achievement level, (b) comparison of grade level achievement, (c) time allotted to complete the 100-item test, (d) grammatical instruction prior to taking the 100-item test, and (e) comparison of instructional methodology. The results indicated that students receiving explicit instruction in the rules of ser and estar beyond the first year of study achieved slightly higher scores, but that the level of achievement was considered to be poor. Differences between groups for the remaining factors were not significant. It was concluded that successful application of explicitly learned grammatical rules, such as the rules for ser and estar, may not be achievable in the time frame of a two-year high school foreign language course. Considerations regarding implicit and explicit acquisition of grammatical rules in second language learning were presented.