Good things come to those who wait: Time discounting differences between adult offenders and nonoffenders

Criminal behavior has been explained by the idea that offenders have a lack of self-control. Yet, Wilson and Daly reported that juvenile offenders exhibit time-discounting tendencies similar to those of nonoffending juveniles. As no previous study has compared time-discounting behavior of adult offenders with nonoffenders, we raise the question, do adult offenders exhibit shorter time horizons or the tendency to discount future rewards? To answer this question, 89 offenders (ex-prisoners and prisoners) and 106 nonoffenders completed a time-discounting measure containing 27 different monetary choices. Our results show that, counter to findings with juvenile offenders, adult offenders (ex-prisoners) exhibit significantly shorter time horizons and discount more than nonoffenders as delayed payoffs increase to medium and large rewards. Furthermore, both offenders and nonoffenders are less likely to discount as the reward of future gains increases to medium and large.     

Deafness and perception of nonverbal expression of emotion

Compensatory sensitivity is said to follow loss of a primary communicative channel. In previous studies in which how accurately deaf and hearing people perceive emotional expression was compared, caricatures or nonverbal behavior of hearing people were stimuli. These studies did not specifically address the possibility that deaf people show nonverbal behavior which might be related to their sign language. To assess this possibility two methodological innovations were made. Stimuli were displayed of nonverbal messages with various emotional contents presented by deaf people in sign language. Also, no verbal labels identified emotional content of the messages. Sixty hearing and 45 deaf male college students watched films of emotional expressions in sign language. The participants tried to identify the emotional content of each film by matching content to one of six photographs of facial expressions. Responses were analyzed for accuracy in perceiving the emotional content. Hearing participants were more accurate in perceiving the display of Happiness. Display of Disgust was perceived better by the deaf participants. No support was found for compensatory sensitivity among the deaf participants.     

Encoding and decoding nonverbal cues of emotion.

Subjects ("senders") encoded six emotions twice, first via facial expressions and second via tone of voice. These expressions were recorded and presented for decoding to the senders and an additional group of judges. Results were as follows: (a) the ability to encode and the ability to decode both visual and auditory cues were significantly related; (b) the relationship between encoding and decoding cues of the same emotion appeared low or negative; (c) the ability to decode visual cues was significantly related to the ability to decode auditory cues, but the correlations among encoding (and decoding) scores on different emotions were low; (d) females were slightly better encoders, and significantly better decoders, than males; (e) acquaintance between sender and judge improved decoding scores among males but not among females; (f) auditory decoding scores were higher than visual decoding scores, particularly among males; (g) auditory decoding scores were relatively high if sender and judge were of the same sex, while visual decoding scores were relatively high if sender and judge were of opposite sexes; (h) decoding scores varied according to channel of communication and type of emotion transmitted.     

Neuropsychological executive functions of adolescent sex offenders and nonsex offenders

A growing body of research now suggests that a substantial number of criminal offenders display neuropsychological deficits, especially frontal-executive dysfunctions. The present study investigated the possibility of similar deficits by comparing the performance of 60 adolescent sex offenders court-ordered to a residential treatment facility with the performance of 60 nonsexual delinquent offenders matched on several pertinent sociodemographic characteristics and scores on four neuropsychological tests: (1) the Trail Making Test, (2) the Controlled Oral Word Association test of the Multilingual Aphasia Examination, (3) the Tower of London, and (4) the Wisconsin Card-sorting Test. Analysis indicated a pattern of frontal-executive dysfunction in a subset of both groups of offenders; this pattern has both theoretical and treatment implications.     

Controlling nonverbal displays: Facial expressions and tone of voice

This study investigated the hypothesis that facial expressions are more controllable and closer to one's awareness than vocal cues. Specifically, it was suggested that nonverbal displays are a function of three factors: (a) expressiveness, or the tendency to display spontaneous nonverbal cues: (b) controllability, or the ability to voluntarily suppress or exaggerate one's spontaneous display: and (c) demeanor, or the sender's tendency to convey a particular impression regardless of his/her experienced emotion. Subjects' facial and vocal reactions to affective stimuli were recorded in a spontaneous condition or under instructions to magnify or conceal reactions to these stimuli. It was shown that information conveyed by facial expressions was best accounted for by controllability whereas information conveyed by tone of voice was best accounted for by expressiveness and demeanor.     

Differences in interpersonal distance among nonoffenders as a function of perceived violence of offenders.

A group of 39 female and 15 male undergraduate students took part in a study of the relationship between perceived violence of criminal offenders and interpersonal distance preferred by nonoffenders. Preferred interpersonal distance, measured for subjects informed that the person with whom they would be sitting in a room was either a violent offender, nonviolent offender, or nonoffender, was the number of seats subjects chose to sit from the person. Analysis of variance shows subjects preferred significantly less mean distance in the nonoffender condition versus either the nonviolent or violent offender conditions.     

Perceptual cues in nonverbal vocal expressions of emotion

The Implicit Association Test (IAT) is the most widely used indirect measure of attitudes in social psychology. It has been suggested that artefacts such as salience asymmetries and familiarity can influence performance on the IAT. Chang and Mitchell (2009) Chang, B. and Mitchell, C. J. 2009. Processing fluency as a source of salience asymmetries in the Implicit Association Test. Quarterly Journal of Experimental Psychology, 62: 2030–2054. [Taylor &; Francis Online], [Web of Science ®] , [Google Scholar] proposed that the ease with which IAT stimuli are classified (classification fluency) is the common mechanism underlying both of these factors. In the current study, we investigated the effect of classification fluency on the IAT and trialled a measure—the split IAT—for dissociating between the effects of valence and salience in the IAT. Across six experiments, we examined the relationship between target classification fluency and salience asymmetries in the IAT. In the standard IAT, the more fluently classified target category was, all else being equal, compatible with pleasant attributes over unpleasant attributes. Furthermore, the more fluently classified target category was more easily classified with the more salient attribute category in the split IAT, independent of evaluative associations. This suggests that the more fluently classified category is also the more salient target category.     

Level of functioning and recidivism risk among adolescent offenders

The assessment of offending youth is important in determining the most appropriate disposition for adolescents involved in the justice system. Recent studies have found a relationship between justice system involvement and level-of-functioning (LOF). This study investigated the relationship between LOF and recidivism risk among adolescents involved in a community-based, juvenile justice treatment program. The results document that conceptually similar domains are substantively correlated; however, a range of functioning was found among youth considered to have the same risk of recidivism. Overall, the results suggest that LOF measures may be associated with risk measures due to a convergence of areas assessed and that the two constructs also may have a relationship analogous to LOF and clinical diagnosis.     

The perception of emotion from body movement in point-light displays of interpersonal dialogue

We examined whether it is possible to identify the emotional content of behaviour from point-light displays where pairs of actors are engaged in interpersonal communication. These actors displayed a series of emotions, which included sadness, anger, joy, disgust, fear, and romantic love. In experiment 1, subjects viewed brief clips of these point-light displays presented the right way up and upside down. In experiment 2, the importance of the interaction between the two figures in the recognition of emotion was examined. Subjects were shown upright versions of (i) the original pairs (dyads), (ii) a single actor (monad), and (iii) a dyad comprising a single actor and his/her mirror image (reflected dyad). In each experiment, the subjects rated the emotional content of the displays by moving a slider along a horizontal scale. All of the emotions received a rating for every clip. In experiment 1, when the displays were upright, the correct emotions were identified in each case except disgust; but, when the displays were inverted, performance was significantly diminished for some emotions. In experiment 2, the recognition of love and joy was impaired by the absence of the acting partner, and the recognition of sadness, joy, and fear was impaired in the non-veridical (mirror image) displays. These findings both support and extend previous research by showing that biological motion is sufficient for the perception of emotion, although inversion affects performance. Moreover, emotion perception from biological motion can be affected by the veridical or non-veridical social context within the displays.     

Perceived gaze direction and the processing of facial displays of emotion

There is good reason to believe that gaze direction and facial displays of emotion share an information value as signals of approach or avoidance. The combination of these cues in the analysis of social communication, however, has been a virtually neglected area of inquiry. Two studies were conducted to test the prediction that direct gaze would facilitate the processing of facially communicated approach-oriented emotions (e.g., anger and joy), whereas averted gaze would facilitate the processing of facially communicated avoidance-oriented emotions (e.g., fear and sadness). The results of both studies confirmed the central hypothesis and suggest that gaze direction and facial expression are combined in the processing of emotionally relevant facial information.     

Salivary testosterone and cortisol among late adolescent male offenders

The relationship of salivary testosterone and cortisol concentrations to personality, criminal violence, prison behavior, and parole board decisions was examined among 113 late-adolescent male offenders. Offenders high in testosterone committed more violent crimes, were judged more harshly by the parole board, and violated prison rules more often than those low in testosterone. No main effects for cortisol emerged. However, as expected, a significant interaction between testosterone and cortisol was found, in which cortisol moderated the correlation between testosterone and violence of crime. Cortisol may be a biological indicator of psychological variables (e.g., social withdrawal) that moderate the testosterone-behavior relationship. Paper and pencil measures of personality and behavior showed little relationship to hormones.This research was supported in part by NIMH grant MH42525 and by a Vice-President's grant from Georgia State University. We wish to thank the Georgia Department of Corrections and the Georgia Board of Pardons and Paroles for making the research possible. In addition, we specifically extend thanks to Tim Carr (Department of Corrections); to Sue Aiken, Tom Morris, and Sheila Thompson (Board of Pardons and Paroles); and to Debra Plyler and Paula Williams for coding inmate records.     

MMPI-A performance of African and Mexican American adolescent first-time offenders

54 African and Mexican American adolescent first-time offenders were examined with the MMPI-A to evaluate ethnic differences. Multivariate analyses by ethnicity and MMPI-A scales (validity, clinical, content, and supplementary scales) were not significant; however, there was a significant univariate difference where African American adolescents scored significantly higher on the Repression scale than the Mexican American group. A greater percentage of within-normal-limits profiles were African American (50%) than Mexican American (25%). Research and clinical implications for using the MMPI-A with these groups are discussed.     

Social anxiety and interpretation biases for facial displays of emotion: emotion detection and ratings of social cost

The current study assessed the processing of facial displays of emotion (Happy, Disgust, and Neutral) of varying emotional intensities in participants with high vs. low social anxiety. Use of facial expressions of varying intensities allowed for strong external validity and a fine-grained analysis of interpretation biases. Sensitivity to perceiving negative evaluation in faces (i.e., emotion detection) was assessed at both long (unlimited) and brief (60 ms) stimulus durations. In addition, ratings of perceived social cost were made indicating what participants judged it would be like to have a social interaction with a person exhibiting the stimulus emotion. Results suggest that high social anxiety participants did not demonstrate biases in their sensitivity to perceiving negative evaluation (i.e. disgust) in facial expressions. However, high social anxiety participants did estimate the perceived cost of interacting with someone showing disgust to be significantly greater than low social anxiety participants, regardless of the intensity of the disgust expression. These results are consistent with a specific type of interpretation bias in which participants with social anxiety have elevated ratings of the social cost of interacting with individuals displaying negative evaluation.     

Sex differences in the ability to recognise non-verbal displays of emotion: A meta-analysis

The present study aimed to quantify the magnitude of sex differences in humans' ability to accurately recognise non-verbal emotional displays. Studies of relevance were those that required explicit labelling of discrete emotions presented in the visual and/or auditory modality. A final set of 551 effect sizes from 215 samples was included in a multilevel meta-analysis. The results showed a small overall advantage in favour of females on emotion recognition tasks (d = 0.19). However, the magnitude of that sex difference was moderated by several factors, namely specific emotion, emotion type (negative, positive), sex of the actor, sensory modality (visual, audio, audio-visual) and age of the participants. Method of presentation (computer, slides, print, etc.), type of measurement (response time, accuracy) and year of publication did not significantly contribute to variance in effect sizes. These findings are discussed in the context of social and biological explanations of sex differences in emotion recognition.     

Attention and executive function deficits in adolescent sex offenders.

Thirty male adolescent sex offenders and 20 age-matched male adolescents completed an extensive battery of attention and executive function tests. Controls were obtained from adolescents from a socially and economically deprived background, typical of the offending group. The attention battery was based on Mirksy, Anthony, Duncan, Ahearn, and Kellam (1991) and the executive function battery on Kelly (2000a). Successful matching for IQ was not achieved and therefore ANCOVA comparisons were made between the groups, with IQ as the covariate. In attention a highly significant difference was found on the focus-execute factor and a significant difference on the shift factor. In executive function there was a highly significant difference only on the response speed factor. In all cases better abilities were demonstrated by the control group. The importance of thorough neuropsychological investigation in the clinical assessment of this forensic group is supported. The clinical implications of neuropsychological deficits in terms of risk assessment and clinical management are discussed.