Visual laterality in the domestic horse (Equus caballus) interacting with humans

Most horses have a side on which they are easier to handle and a direction they favour when working on a circle, and recent studies have suggested a correlation between emotion and visual laterality when horses observe inanimate objects. As such lateralisation could provide important clues regarding the horse’s cognitive processes, we investigated whether horses also show laterality in association with people. We gave horses the choice of entering a chute to left or right, with and without the passive, non-interactive presence of a person unknown to them. The left eye was preferred for scanning under both conditions, but significantly more so when a person was present. Traditionally, riders handle horses only from the left, so we repeated the experiment with horses specifically trained on both sides. Again, there was a consistent preference for left eye scanning in the presence of a person, whether known to the horses or not. We also examined horses interacting with a person, using both traditionally and bilaterally trained horses. Both groups showed left eye preference for viewing the person, regardless of training and test procedure. For those horses tested under both passive and interactive conditions, the left eye was preferred significantly more during interaction. We suggest that most horses prefer to use their left eye for assessment and evaluation, and that there is an emotional aspect to the choice which may be positive or negative, depending on the circumstances. We believe these results have important practical implications and that emotional laterality should be taken into account in training methods.     

Testing a new cognitive behavioural treatment for obesity: A randomized controlled trial with three-year follow-up

It is remarkably difficult for people with obesity to maintain a new lower weight following weight loss. The aim of the present study was to examine the immediate and longer-term effects of a new cognitive behavioural treatment that was explicitly designed to minimise this post-treatment weight regain. One hundred and fifty female participants with obesity were randomized to the new treatment, behaviour therapy (the leading alternative psychological treatment) or guided self-help (a minimal intervention). Both of the main treatments resulted in an average weight loss of about ten percent of initial weight whereas weight loss was more modest with guided self-help. The participants were subsequently followed-up for three years post-treatment. The great majority regained almost all the weight that they had lost with the new treatment being no better than the behavioural treatment in preventing weight regain. These findings lend further support to the notion that obesity is resistant to psychological methods of treatment, if anything other than a short-term perspective is taken. It is suggested that it is ethically questionable to claim that psychological treatments for obesity “work” in the absence of data on their longer-term effects.     

The efficacy of couples-based interventions for panic disorder with agoraphobia

From this systematic literature review it was concluded that panic disorder with agoraphobia (PDA) can sometimes occur in conjunction with marital problems. Couples-based treatments for PDA – partner-assisted exposure and marital therapy – can be an effective treatment for the condition. It is as effective as individually based cognitive behaviour therapy. Involving partners of people with PDA in therapy may be appropriate in some cases, particularly those in which there are marital difficulties. Couple-focused interventions may enhance the maintenance of treatment gains by facilitating interactions that positively reinforce and perpetuate attempts by people with PDA to enter feared situations and cope with these effectively. People with PDA who have good marital relationships show a better response to both individual and couples-based treatment programmes. In some instances effective couples-based treatment leads to improvement in marital adjustment as well as in PDA symptomatology.     

Risk for injury in preschoolers: relationship to attention deficit hyperactivity disorder.

Parental ratings of preschoolers' risk for injury, direct assessment of preschoolers' behavior thought related to risk for injury (e.g., Inattention, impulsivity) and number of documented injuries were examined in preschoolers with Attention Deficit Hyperactivity Disorder (ADHD) and their non-ADHD peers (Control). Of preschoolers with ADHD, 58.3% exhibited behavior which placed them at-risk for physical injury (0% Control), and their performance was significantly poorer on clinic-based tests. Nonetheless, preschoolers with ADHD did not actually sustain significantly more injuries which warranted medical treatment in an emergency department. Although preschoolers with ADHD may be at increased risk for minor injuries, further research is needed to determine whether they more frequently sustain more serious injuries.     

Personal versus interpersonal contributions to depressive symptoms among Hong Kong adolescents

Cross‐cultural theory proposes that an essential distinction between cultures lies in the extent to which individual members see themselves as either independent agents preferentially valuing agency and efficacy, or as embedded within a social context preferentially valuing interpersonal relationships. A nonreferred sample of 605 boys and 503 girls from Hong Kong provided information regarding: (1) perceptions of their personal self‐efficacy or beliefs regarding their own ability to master challenges they face; (2) the degree of harmony in their interpersonal (peer and family) relationships; and (3) depressive symptoms as an assessment of their mood. Cognitive theories of emotions propose that both the individual's assessment of his/her self‐efficacy and of his/her relationships influence mood. Hypotheses, based on cross‐cultural theory, were that in this collective culture, interpersonal evaluations would predict more of the variance in mood than would personal self‐efficacy. Contrary to Western sex‐differences literature, it was predicted that the effect of interpersonal harmony on mood would be equally pronounced for girls and for boys. Structural equation modelling was used to test causal models. Consistent with findings from the West, evaluations of personal self‐efficacy as well as interpersonal relationship harmony were significantly associated with depressed mood. Consistent with cultural theory, interpersonal relationship harmony was more strongly associated with mood than was personal self‐efficacy for the entire sample of adolescents. In contrast to findings of sex differences in the salience of relationships in the West, the prediction of interpersonal relationships to mood was equal for boys and girls in Hong Kong. This preliminary study extends models of cognitive concomitants of mood disruption to a non‐Western culture, and provides a framework to understand relative contnbutors to mood in adolescence. The findings tentatively suggest that treatment for depressive mood in Chinese populations should prioritize enhancement of the perceived quality of interpersonal relationships over increasing a sense of mastery.     

A Reasonable Passion: The Revival of Liberal Theology

Books reviewed in this article:
Mark D. Chapman (ed.), The Future of Liberal Theology
Michael J. Langford, A Liberal Theology For The Twenty–First Century: A Passion For Reason     

Response duration is sensitive to both immediate and delayed reinforcement

We investigated the duration of lever pressing by rats when the delivery of appetitive reinforcers was contingent upon response duration. In the first experiment, response durations increased when duration requirements were imposed, and they decreased when duration requirements were removed. This effect occurred whether reinforcers were immediate or delayed by 8 s. In order to maintain the integrity of the delay intervals, reinforcer delivery was dependent upon both lever depression and release. In a second experiment, lever depression only and a response duration of at least 4 s were required for reinforcer delivery. Compared to immediate reinforcement conditions, delayed reinforcers increased both variability and the length of the maximum response durations. In a third experiment, immediate reinforcers were delivered contingent upon lever depression and release under a variety of duration requirements. Median lever‐press durations tracked the contingencies rapidly. Across all three experiments, rats emitted numerous response durations that were too short to satisfy the reinforcer requirements, and bimodal distributions similar to those produced by differential reinforcement of low rate schedules were evident for most rats. In many aspects, response duration responds to reinforcement parameters in a fashion similar to rate of discrete responding, but an examination of this continuous dimension of behavior may provide additional information about environment–behavior relationships.     

The interactive effects of conscientiousness, work effort, and psychological climate on job performance

Historically, conscientiousness-performance relationships have been modest, suggesting the need to examine theoretically-relevant moderating variables. Based on theory and empirical research suggesting that performance variance is maximally predicted in the presence of person and situation variables, we examined the moderating potential of work effort and psychological climate on the conscientiousness-performance relationship. Data gathered from 139 predominately part-time restaurant employees revealed that conscientiousness predicted performance in the simultaneous presence of high levels of work effort and positive psychological climate. Conversely, conscientiousness had no empirical association with performance when coupled with other combinations (e.g., high-negative; low-positive; low-negative) of work effort and psychological climate. Implications for research, strengths, limitations, and directions for future research are discussed.     

Counterfactual and semifactual conditionals prime alternative possibilities

The authors examined in 3 experiments the comprehension of counterfactuals, such as "If it had rained, the plants would have bloomed," and semifactuals, such as "Even if it had rained, the plants would have bloomed," compared with indicative conditionals, "If it rained, the plants bloomed." The first experiment showed that people read the negative conjunction, "not p and not q" faster when it was primed by a counterfactual than when it was primed by an indicative conditional. They read the affirmative conjunction, "p and q" equally quickly when it was primed by either conditional. The 2nd experiment showed that people read the negated-antecedent conjunction, "not p and q" faster when it was primed by a semifactual conditional. The 3rd experiment corroborated these results in a direct comparison of counterfactuals and semifactuals. The authors discuss the implications of the results for the mental representations of different conditionals.