Active gaze, visual look-ahead, and locomotor control

The authors examined observers steering through a series of obstacles to determine the role of active gaze in shaping locomotor trajectories. Participants sat on a bicycle trainer integrated with a large field-of-view simulator and steered through a series of slalom gates. Steering behavior was determined by examining the passing distance through gates and the smoothness of trajectory. Gaze monitoring revealed which slalom targets were fixated and for how long. Participants tended to track the most immediate gate until it was about 1.5 s away, at which point gaze switched to the next slalom gate. To probe this gaze pattern, the authors then introduced a number of experimental conditions that placed spatial or temporal constraints on where participants could look and when. These manipulations resulted in systematic steering errors when observers were forced to use unnatural looking patterns, but errors were reduced when peripheral monitoring of obstacles was allowed. A steering model based on active gaze sampling is proposed, informed by the experimental conditions and consistent with observations in free-gaze experiments and with recommendations from real-world high-speed steering.     

The Implicit Motives of Terrorist Groups: How the Needs for Affiliation and Power Translate into Death and Destruction

This study explored the dynamics of terrorism through a quantitative content analysis of documents issued by terrorist groups and nonterrorist comparison groups. Thirteen terrorist groups were matched with comparison groups that shared the same ideologies, and their documents were coded for ingroup affiliation, outgroup affiliation, and power motive imagery. As hypothesized, compared with nonterrorist groups, terrorist groups were significantly higher in ingroup affiliation motive imagery and significantly lower in outgroup affiliation motive imagery in the full sample of documents and in an indicator sample that included only terrorist groups' preterrorism documents. Terrorist groups were significantly higher than comparison groups in power motive imagery in the full sample and marginally significantly higher in power motive imagery in the indicator sample. These results highlight the important role that group dynamics play in terrorist groups.     

The influence of animal fear on attentional capture by fear-relevant animal stimuli in children

The present study demonstrated that pictures of fear-relevant animals, snakes and spiders, presented among backgrounds of other animal stimuli captured attention and interfered in the detection of a neutral target to the same extent in a large sample of unselected children (N=81). Moreover, detection of a neutral target animal was slowed more in the presence of a feared fear-relevant distracter, e.g., a snake for snake fearful children, than in the presence of a not feared fear-relevant distracter, e.g., a spider for snake fearful children. These results indicate attentional capture by phylogenetically fear-relevant animal stimuli in children and the selective enhancement of this effect by fear of these animals. These findings are consistent with current models of preferential processing of phylogenetically prepared threat stimuli and with cognitive models of anxiety that propose an enhancing effect of fear in the processing of fear-related stimuli.     

Threat-based cognitive biases in anxious children: comparison with non-anxious children before and after cognitive behavioural treatment

Attention and interpretation biases for threat stimuli were assessed in 19 anxious (ANX) children before and after cognitive behavioural therapy (CBT), and compared with responses from 19 non-anxious (NA) control children collected over the same period. Attentional bias was assessed using a picture version of the visual probe task with threat, neutral and pleasant pictures. Threat interpretation bias was assessed using both a homographs task in which children used homograph words in a sentence and their neutral or threatening meaning was assessed, and a stories task in which children rated their negative emotion, danger judgments, and influencing ability in ambiguous situations. ANX children showed attention biases towards threat on the visual probe task and threat interpretation biases on the stories task but not the homographs task at pre-treatment in comparison with NA children. Following treatment, ANX children's threat interpretation biases as assessed on the stories task reduced significantly to within levels comparable to NA children. However, ANX children continued to show larger attentional biases towards threat than pleasant pictures on the visual probe task at post-treatment, whereas NA children did not show attentional biases. Moreover, a residual threat interpretation style on the stories task at post-treatment was associated with higher anxiety symptoms in both ANX and NA children.     

Satisfied Groups and Satisfied Members: Untangling the Between- and Within-Groups Effects of Need Satisfaction

The present study investigated how individual- and group-level psychological need satisfaction ( Deci & Ryan, 1985a ) influence affect, intrinsic motivation, and performance satisfaction. It also examined the impact of leader personality on group need satisfaction. Groups (45) of 4 college women participated in a task, with 1 member designated "leader." Multilevel modeling revealed significant between- and within- groups relations. Individuals in groups with higher need satisfaction reported greater pleasant affect, intrinsic motivation, and satisfaction with group performance. In addition, individuals whose need satisfaction was higher than their group's average reported greater intrinsic motivation, pleasant affect, and performance satisfaction. Group need satisfaction was found to be lower under neurotic leaders and higher under agreeable, introverted leaders. Implications for group environments are discussed.     

Increasing and decreasing motor and cognitive output: a model of general action and inaction goals

General action and inaction goals can influence the amount of motor or cognitive output irrespective of the type of behavior in question, with the same stimuli producing trivial and important motor and cognitive manifestations normally viewed as parts of different systems. A series of experiments examined the effects of instilling general action and inaction goals using word primes, such as "action" and "rest." The first 5 experiments showed that the same stimuli influenced motor output, such as doodling on a piece of paper and eating, as well as cognitive output, such as recall and problem solving. The last 2 experiments supported the prediction that these diverse effects can result from the instigation of general action and inaction goals. Specifically, these last 2 studies confirmed that participants were motivated to achieve active or inactive states and that attaining them decreased the effects of the primes on behavior.     

Delayed memory for visual—haptic exploration of familiar objects

Long-term memory of haptic, visual, and cross-modality information was investigated. In Experiment 1, subjects briefly explored 40 commonplace objects visually or haptically and then received a recognition test with categorically similar foils in the same or the alternative modality both immediately and after 1 week. Recognition was best for visual input and test, with haptic memory still apparent after a week's delay. Recognition was poorest in the cross-modality conditions, with performance on the haptic-visual and visual-haptic cross-modal conditions being nearly identical. Visual and haptic information decayed at similar rates across a week delay. In Experiment 2, subjects simultaneously viewed and handled the same objects, and transfer was tested in a successive cue-modality paradigm. Performance with the visual modality again exceeded that with the haptic modality. Furthermore, initial errors on the haptic test were often corrected when followed by the visual presentation, both immediately and after 1 week. However, visual test errors were corrected by haptic cuing on the immediate test only. These results are discussed in terms of shared information between the haptic and visual modalities, and the ease of transfer between these modalities immediately and after a substantial delay.     

A service learning based intervention to change attitudes toward obese individuals in kinesiology pre-professionals

The purpose of this study was to conduct an intervention to change attitudes toward obese individuals. Ninety-five Kinesiology undergraduates conducted a FITNESSGRAM service-learning project with school-aged children. They completed anti-fat attitude test (AFAT) and explicit attitude assessments before and after the intervention. The results indicated participants had anti-fat bias toward obese individuals on the lazy/motivated scale, but not on the other four scales on pre measurements. Their anti-fat attitudes concerning whether people are responsible for their weight were significantly reduced through the intervention. Five themes emerged from the undergraduates’ reflective papers that support the efficacy of the intervention: Healthy lifestyle—an individual choice, barriers to physical activity, multi-factorial nature of obesity, and promotion of physical activity through information and encouragement. The findings partially support experiential learning as a potential mechanism to reduce individuals’ anti-fat attitudes.

Examining interrelationships between the Cigarette Purchase Task and delay discounting among pregnant women

Two common behavioral economic simulation tasks used to study cigarette smoking are the Cigarette Purchase Task, a measure of cigarette demand, and delay discounting, a measure of the subjective value of rewards as a function of delays to delivery. Few studies have evaluated whether combining these tasks enhances understanding of smoking beyond either alone. The current study represents an initial evaluation of the intersection between cigarette demand indices and delay discounting among pregnant smokers by examining associations between these measures and whether a woman makes antepartum quit attempts before entering prenatal care (a reliable predictor of eventual quitting). Participants were 159 pregnant women enrolled in a smoking‐cessation trial. Low O _max and shallow discounting were each associated with antepartum quit attempts. Participants were next categorized into four subgroups (low O _max, shallow discounting; low O _max, steep discounting; high O _max, shallow discounting; high O _max, steep discounting) using median splits. Those with shallow discounting and low O _max were more likely to have made quit attempts than each of the other three subgroups. That is, steep discounting appears to undermine the association of low O _max and efforts to quit smoking during pregnancy while high O _max overshadows any protective influence associated with shallow discounting.     

Symptom reduction and termination: client change and therapist identified reasons for saying goodbye

Empirical efforts have focused on predicting whether or not clients prematurely terminate therapy, with nonattendance of last session equated to premature termination. However, this fails to explore the relationship between clients’ distress reduction and reasons for termination. With this study, we aimed to understand how clients’ distress change relates to premature termination and examine clients’ distress change in conjunction with therapists’ perceptions of termination reasons. We collected data from 797 clients who prematurely terminated or attended termination but completed therapy a minimum of three individual sessions provided by 38 therapists. Clients completed an assessment of psychological symptoms before each session. At the end of treatment, therapists identified the reasons they believed termination occurred for all clients in the sample. Results demonstrate that total sessions attended and missed predict premature termination, whereas distress change does not. Additionally, clients who were believed to accomplish goals do show greater change. However, therapists’ indicated that over half of clients did not reach goals at termination and they did not perceive nonattendance at last session to equate to drop out in all cases. Implications are discussed with respect to understanding why clients’ terminate, therapeutic goal conceptualization, and review of goals during termination in time-limited psychotherapy.