Clinical concepts

In this section authors have written about the Winnicottian concept that they value most in their everyday working lives. This provides a valuable insight into the ways in which Winnicott's work is being used as a springboard for new ideas, as well as enlightening familiar ground. It is striking to see how the original Winnicottian idea takes on new form as it is taken up by new generations of clinicians. Despite the absence of a Winnicottian training school, his pervasive impact continues to influence current theory and practice.     

Within-individual variability in self-concepts and personality states: Applying density distribution and situation-behavior approaches across cultures

Within-individual variability in self-concepts and everyday personality states and affects was investigated in two experience sampling studies using density distribution and situation-behavior approaches. In all seven cultures sampled, within-individual variability was substantial and self-concept and personality state variability exhibited moderate convergence. Variability in personality and affect states was moderately predicted by perceived need satisfaction in the situations. The density distribution and situation-behavior approaches were moderately convergent in identifying the most variable individuals, but the pattern of cultural differences differed in the two methods. Contrary to cultural psychology perspectives, cultural differences in within-individual variability did not consistently correspond to cultural differences in individualism–collectivism, dialecticism, or tightness.     

Pursuit Rotor Reminiscence in Schizophrenics and Normals

Normal and schizophrenic Ss (N=24 each) did pursuit rotor tracking and reminiscence was the score of interest; rest pauses of 2, 12, and 30 min., and 1, 6, and 24 hr. were interpolated in counterbalanced order after 5 min. of practice. It was predicted, on the basis of previous work, that schizophrenics would show greater reminiscence after the longer rest pauses, normals after the shorter rest pauses. The expected cross-over effect was found, but at a non-significant level only. There were no order effects. A discussion is given of the relation of these results to the interpretation of schizophrenia in terms of ‘‘arousal.”     

Motor Learning through Induced Variability at the Task Goal and Execution Redundancy Levels

The authors examined the influence of introducing variability at two different levels in the learning of a striking task. Variability at the task goal level was introduced by changing target location, whereas variability at the execution redundancy level was introduced by using an intermediate target that constrained participants to use different paths from trial to trial to strike the same target. After practice, participants were transferred to 2 test conditions: (a) a fixed-target test, where the position of the target was unchanged; and (b) a variable-target test, where the position of the target was varied from trial to trial. The results from the manipulation at the task goal level were consistent with predictions from the specificity of practice hypothesis. In both the fixed- and variable-target tests, the best performance was achieved by the group that had practiced in the condition matching the test condition. At the execution-redundancy level, practicing multiple solutions to achieve the task goal did not improve performance in either the fixed- or variable-target tests. These results show that introducing variability at the task goal and execution redundancy levels has different effects on learning and generalization and that practice schedules that constrain the participant to use redundant solutions may not facilitate learning.     

心率变异性在心身疾病和情绪障碍研究中的应用

心率变异性的频谱成分可单独反映交感神经和副交感神经活动的影响。高频（HF）是由迷走神经单独介导；低频（LF）受迷走神经和交感神经共同调制，但主要反映交感神经的活动性 。此指标可对高血压、冠心病和月经前期烦躁等心身障碍进行评价。该文还探讨了它用于情绪研究的价值，并认为在不同情绪体验期间的自主神经活动有多种搭配模式，正常人与情绪障碍者之间以及情绪障碍（抑郁、焦虑、恐怖、强迫）患者在自主神经活动方面可能存在显著差别     

The Efficacy of a Group Triple P (Positive Parenting Program) for Chinese Parents with a Child Diagnosed with ADHD in Hong Kong: A Pilot Randomised Controlled Study

The present pilot study evaluated the efficacy of the Level 4 Group Positive Parenting Program (Triple P) with Hong Kong Chinese parents who had a child with attention deficit/hyperactivity disorder (ADHD), using a randomised controlled trial design. It was a mixed research method involving quantitative measurement and semi‐structured focus group. Participants were randomly assigned to Triple P (n = 8) or control group (n = 9) and completed measures on child disruptive behaviours, sense of parenting efficacy and satisfaction, family stress and service needs. Outcomes were assessed at pre‐, post‐, and 3‐month follow‐up. A focus group was also conducted with the participants in the intervention group upon the programme completion. Compared with the control group, the intervention group reported a significant reduction in intensity of child behaviour problems and a significant increase in parenting efficacy at post‐intervention. The gain in reducing intensity of child disruptive behaviours maintained to 3 months after the completion of programme. Qualitative data suggested the three key elements to help both parents and children get positive changes: understanding and empathy, emotional control, and persistence in applying positive parenting strategies. The results partially provided preliminary evidence supporting the efficacy of Triple P in reducing child behaviour problems for ADHD in Chinese society.     

The coupling of short sleep duration and high sleep need predicts riskier decision making

Abstract

Objective: To examine how risk-related decision making might be associated with habitual sleep variables, including sleep variability, sleep duration and perceived sleep need in young adults cross-sectionally and longitudinally.

Design: 166 participants completed a 7-day protocol with sleep and risk-related decision-making measures at baseline (T1) and 12 months later (T2).

Results: Habitual short sleep duration (averaging < 6?h nightly) was identified in 11.0% in our sample. After controlling for baseline demographic factors and risk-taking measures, self-reported sleep need at T1 interacted with habitual short sleep in predicting risk taking at follow-up (F_8,139=9.575, adjusted R²=.431, p<.001). T1 greater perceived sleep need predicted more risk taking among short sleepers, but decreased risk taking among normal sleepers at T2. Variable sleep timing was cross-sectionally correlated with making more Risky choices at baseline and fewer Safe choices after loss at follow up.

Conclusions: Young adults with variable sleep timing and those with short sleep duration coupled with high perceived sleep need were more likely to take risks. The moderating effects of perceived sleep need suggest that individual differences may alter the impact of sleep loss and hence should be measured and accounted for in future studies.     

Effects of 7.5% CO2-Induced Anxiety on Individual Performance During a Group Computer Combat Game

The inhalation of 7.5% CO₂ has been shown to induce cognitive effects similar to anxiety. Sixteen healthy participants (14 male; mean age 25.6 years) inhaled either a mixture of 7.5% CO₂ gas or air while playing a group combat computer game. Participants reported greater feelings of anxiety and fired fewer bullets when inhaling CO₂ compared with air, indicating CO₂-induced anxiety may improve efficiency without task-related decrements. Being able to induce controlled and measured anxiety in group situations by CO₂ inhalation may be a useful technique when evaluating response to stressful situations, such as combat, in simulators or real-life scenarios.