Correspondence effects with manual gestures and postures: a study of imitation

In this study, the authors applied methods and theories from research of stimulus-response compatibility (SRC) to action imitation. In 6 experiments, they adopted the logic of the Simon paradigm (B. Hommel & W. Prinz, 1996) to explore interference between task-relevant symbolic stimulus features (color) and task-irrelevant iconic stimulus features (2 hand gestures and 2 postures). The same 2 hand gestures served as responses. Pronounced correspondence effects for both gestures and postures showed up throughout. In line with theories of SRC, the authors account for these correspondence effects in terms of overlap arising between stimulus and response features in a common representational domain. As a specific extension of this approach, they propose 2 functionally independent mechanisms: One operates movement-based when dynamic information is provided, and the other operates state-based with static postures as stimuli. Implications for theories of both SRC and action imitation are discussed.     

Thatcher illusion: dependence on angle of rotation

The expression of a face with its eyes and mouth inverted changes from 'pleasant' to 'grotesque' as the stimulus is rotated from 180 degrees to 0 degree (Thatcher illusion). We determined the angular orientation at which this change occurred for three manipulated faces. Mean thresholds for eighteen observers were found to lie between 94 degrees and 100 degrees relative to the vertical with an average overlap of about 15 degrees between an observer's ascending and descending thresholds. The sudden nature and relatively narrow zone of the changeover suggest a neuronal step-tuning of hypothetical face cells in the human brain, underlying the holistic ('grotesque') versus componential ('pleasant') processing of upright versus upside-down faces. Findings are discussed within the framework of cognitive, neuroimaging, and single-cell studies.     

Psychosocial stress and HPA functioning: no evidence for a reduced resilience in healthy elderly men

In order to investigate if HPA functioning is altered with age, the present study was conducted. Fifteen healthy elderly men (60-76 years; mean age 66.5 +/- 1.48 yrs.) and 12 younger adults (20-29 years; mean age 25.6 +/- 0.77 yrs.) collected salivary free cortisol profiles after awakening for basal HPA activity. Then, all subjects were exposed to the "Trier Social Stress Test" (TSST). This psychosocial stress protocol consists of a free speech and a mental arithmetic task of 13 minutes duration performed in front of an audience. Beside the assessment of endocrine and cardiovascular responses to the stressful task ratings of depression, mood and perceived stressfulness were obtained. Results show that younger and elderly men had similar morning cortisol profiles after awakening with both groups showing the expected rise after awakening (P=0.004). The TSST induced significant increases in ACTH, total plasma cortisol, saliva free cortisol, and heart rates (all P<0.0001). Regardless of age, both age groups showed comparable endocrine response patterns when confronted with the stressor. However, cardiovascular responses were significantly higher in younger men compared to elderly men (P=0.03). Catecholamine data revealed significant norepinephrine and epinephrine increases due to the stressor (both P<0.0001) with a trend toward elevated norepinephrine levels in elderly men (P=0.058). In sum, the investigated basal and response parameters of HPA functioning neither support the idea of a reduced resilience in healthy aged humans nor do they appear to strengthen assumptions derived from the so called "glucocorticoid cascade hypothesis".     

A Negotiation Approach to Intake and Treatment Choice

Treatment choice is the decision process whereby the psychotherapeutic methods and the psychotherapist are determined when psychotherapy is recommended for a specific client. In this article the problem of treatment choice is situated within an integrative view of psychotherapy. A review of the literature confirms the usefulness of the following concepts for treatment choice: client preferences, client control of the situation of choice, and the mutual acceptability of differing views of therapists and clients. These research findings reveal the importance of four elements in the psychotherapeutic intake strategy: exploration of the client's perspective, informing the client, negotiation as a process of confrontation between the client's and the clinician's perspective, and the client's ultimate choice between alternative treatment proposals.     

Catatonia in affective disorder: new findings and a review of the literature

The historical development of the concept of catatonia in affective disorders and contemporary papers on this topic are reviewed. In addition, data from a current study on the frequency of catatonia in mixed mania are reported. Differences between catatonic and noncatatonic patients with mixed mania are presented and their relevance to clinical practice is discussed.     

The legal basis for the Danish committee on scientific dishonesty

The author, a High Court Judge, has chaired the Danish Committee on Scientific Dishonesty (DCSD) since its establishment in 1992. The Committee has worked in the health sector, but from 1999 the scope has been broadened to cover all fields of science. The article describes how the work is organised and the experiences gained. It is stressed, that the difficulty in connection with scientific dishonesty is, first and foremost, to organise a system suitable for investigating cases effectively, professionally, and with proper respect to the fundamental legal rights of the parties involved. The Committee has also spent much effort in determining what can be termed scientific dishonesty and what falls outside this category but which may, nevertheless, be characterised as breaching of good scientific practice. It is emphasised that these rules are not arbitrarily established by the Committee, but formulated in accordance with norms general accepted by opinion leaders in the scientific community. An carlier version of this paper was presented at a symposium, Scientific Misconduct. An International Perspective, organised by The Medical University of Warsaw, 16 November, 1998. The article is based on more comprehensive articles by the same author in DCSD’s Annual Reports for 1993 and 1995.     

Cognitive and functional deterioration in patients with severe COPD

The objective of this study was to examine the association among the duration of COPD, degree of hypoxemia, and neurological abnormalities including cognitive functioning. Fifty-four patients with severe COPD and 24 age- and sex-matched controls, were included in the study. All patients and controls were administered pulmonary function tests, standardized Mini-mental State Examination (MMSE), Blessed Dementia Scale (BDS), Physical Self-maintenance Scale (PSMS), Modified Activities of Daily Living scale (MADL), Instrumental Activities of Daily Living scale (IADL), Cornell Scale for Depression in Dementia (CSDD), Global Deterioration Scale (GDS) and Clinical Dementia Rating (CDR). In addition, detailed physical and neurological examinations were performed. Sixty-four percent of patients with COPD showed abnormalities in MMSE, predominantly in recent memory, construction, attention, language, and orientation domains. Functional abnormalities were correlated with cognitive abnormalities. Although COPD patients did not show significant depression compared to controls, 77.7%. of the patients showed subjective and objective cognitive disturbance and 72.2% of the patients were classified as questionable or mild dementia. In conclusion, patients with COPD show significant cognitive and functional impairments that cannot be explained just by coincidence or by depression.     

Self-controlled visual discrimination learning of group-housed dwarf goats (Capra hircus): behavioral strategies and effects of relocation on learning and memory

In most studies on animal learning, individual animals are tested separately in a specific learning environment and with a limited number of trials per day. An alternative approach is to test animals in a familiar environment in their social group. In this study, the authors--applying a fully automated learning device--investigated voluntary, self-controlled visual shape discrimination learning of group-housed dwarf goats (Capra hircus). The majority of the tested goats showed successful shape discrimination, which indicates the adaptive value of an effective learning strategy. However, in each group, a few individual goats developed behavioral strategies different from shape discrimination to get reward. Relocation impairs memory retrieval (probably by attention shifting) only temporarily for previously learnt shapes. The results demonstrate the usefulness of a self-controlled learning paradigm to assess learning abilities of social species in their normal social settings. This may be especially relevant for captive animals to improve their welfare.     

Using the concept of wisdom to enhance the expression of wisdom knowledge: not the philosopher's dream but differential effects of developmental preparedness

In this study, the authors explored whether wisdom-related performance could be enhanced by an instruction referring to the abstract concept of wisdom ("try to give a wise response"). The authors used three levels of activation of the concept of wisdom as well as intelligence-activation and control conditions in a heterogeneous sample of three age groups (N = 318). Results showed no general effect of the wisdom-concept instructions but did show an aptitude (resource) treatment interaction: Participants high in preparedness resources associated with wisdom exhibited some gains, whereas the performance of resource-low participants actually declined after the instruction. Implications and consequences with respect to ways of enhancing the expression of wisdom-related knowledge are discussed.