A computerized positioning system was developed and used to map gross body movement of children around a room in response to high-intensity sound stimulation. Details of the data collection system are discussed. The system has potential for use in a variety of research projects when it is necessary to identify position coordinates and analyze changes in spatial location for subjects within a test room environment. 相似文献
Individual differences in desire for feedback did not exhibit any significant correlations with a variety of self-report personality dimensions. Additional survey studies indicated that a higher proportion of individuals in nonclinical as compared to clinical samples reported a strong desire to receive feedback about themselves. Subsequent studies revealed that the higher as compared to lower desire for feedback individuals: (1) were more willing to seek psychological help and to participate in therapy once in treatment; (2) exhibited more positive expectancies for change at the beginning of therapy; and (3) were more “responsive” to diagnostic feedback. Within the limitations of the present findings, the potential “adaptiveness” of desire for feedback is discussed and the negative motivational therapeutic consequences associated with a low desire for feedback are explored. 相似文献
Giving eyewitnesses confirming feedback after they make a lineup identification (e.g., "Good. You identified the actual suspect.") inflates not only their recollections of how confident they were at the time of the identification, but also other testimony-relevant judgments, such as how good their view was, how much attention they paid during witnessing, and how quickly they identified the suspect. We replicated this postidentification-feedback effect with eyewitnesses who had made false identifications (N = 156), adding critical conditions in which after the identification but prior to the feedback, some eyewitnesses were given instructions to privately think about their confidence, their view, and other matters. Other eyewitnesses were given the same thought instructions subsequent to the feedback manipulation. Prior thought served to mitigate the effects of feedback, but subsequent thought did not. In addition, even without feedback, privately thinking about confidence had some confidence-inflating properties of its own. 相似文献
Although worry is the central feature of Generalised Anxiety Disorder (GAD), little is known about the factors that contribute to pathological or problematic worry. In a recent cognitive model of GAD, Wells, A. (1995) proposed that negative appraisal of worrying itself (meta-worry or type 2 worry) should be distinguished from other types of worrying (type 1 worry). A central feature of this model is the idea that individuals with GAD hold rigid positive beliefs about the usefulness of worrying as a coping strategy. However, these individuals also hold negative beliefs and appraise worrying as uncontrollable and dangerous. This combination of cognitions and associated responses leads to an increased frequency and generality of worrying, and thus to the pathological worry characteristic of GAD. This paper reports a preliminary test of the hypothesis that meta-worry contributes to problematic and pathological worrying, and this relationship is independent of the frequency of other types of worry. In testing for associations between worry dimensions we controlled for overlaps with Trait anxiety, and the controllability of worrying. Results of a series of regression analyses support the hypothesis that pathological worry is associated with meta-worry and this association is independent of Trait-anxiety and type 1 worry. The clinical implications of these data are briefly discussed. 相似文献
Viewed from a behavioral perspective alcoholism is a behavioral disorder which should be influenced by the same range of environmental and historical variables which affect other operant behaviors. Therefore, environmental stimulus circumstances should play a significant role in influencing alcoholics' disposition to drink. In particular, stimuli which have previously been associated with drinking behavior should come to exert some controlling influence over subsequent disposition to drink. Relapse to substance abuse is often believed to be precipitated by exposure to stimulus circumstances previously associated with the drug or its use. This hypothesis has received its greatest emphasis in the area of narcotics abuse (Wikler, 1965). but presumably it is relevant also to the case of alcohol abuse. Research concerning abusers' reactions to alcohol-related or drinking-related stimuli has been minimal. Ludwig et al. (1974) have presented data suggesting that alcohol-related stimuli interact with priming doses of ethanol to increase alcoholics' disposition to drink. Miller et al. (1974), however, failed to observe a significant effect of drinking-related stimuli upon alcoholics' disposition to drink.
In the field of behavior therapy, relaxation and stimulus-exposure techniques (e.g. systematic desensitization) are often recommended as techniques for reducing the effect of environmental stimuli upon an individual's behavior. However, data are lacking concerning the effect of relaxation training upon alcoholics. The present study uses psychophysiological procedures to investigate three issues concerning the effect of drinking-related stimuli and relaxation instructions upon alcoholics: (1) the effect of a single session of systematic relaxation instructions upon the electromyographic tension levels of abstinent alcoholics; (2) the effect of drinking-related auditory stimuli upon the electromyographic tension levels of abstinent alcoholics; and (3) the influence of prior relaxation instructions upon the EMG responses of abstinent alcoholics exposed to drinking-related stimuli. 相似文献
Hypotheses advanced concerning the functions and advantages of the two-joint (and multi-joint) muscles in the lower limb include transferring energy, ease of control, muscle bulk reduction and decreased velocity of contraction. The aim of this investigation was to assess quantitatively the generality of one such suggestion seen in the literature. It was hypothesized that two-joint muscles would be recruited preferentially when they produced appropriate moments at the joints they crossed. This organizing strategy was used to partition the sagittal plane joint moment at the hip, knee and ankle between the one- and two-joint muscles crossing those joints. If the conditions of the strategy were not met, the moment was considered to be producted by one-joint muscles only. Ten representative muscles were modelled: tibialis anterior, soleus, gastrocnemius, short head of biceps femoris, vasti, rectus femoris, long head of biceps femoris, sartorius, gluteus maximus and iliopsoas. A number of static loading and walking conditions were recorded and then compared to simultaneously measured linear envelope EMG records of each activity. The joint moments were determined from a sagittal plane kinetic analysis using cinematography and measurements of the ground reaction force. Overall, the strategy partitioned the moment between the one- and two-joint muscles in accordance with the EMG records. The strategy tended to underestimate the contributions of the one-joint musculature, implying the existence of other important control strategies, such as cocontraction of antagonists for joint stability, or of synergistic activation to share the joint moment. It was, however, observed that predicted activity of two-joint musculature did agree well with recorded EMG activity. 相似文献
A number of basic engagement techniques in family therapy are identified and illustrated. These include (1) techniques that enable the therapist to achieve a position of influence with family members or to gain entry into the family system, (2) techniques utilized in teaching the family how to behave in the therapy setting, and (3) the tactics the therapist may use to manage difficult moments in the session. Issues in the relationship between technique and the theory and practice of family intervention are also examined.A videotape (Wells, R.A., & Page, M.H.Engaging the Family in the Helping Process: Basic Techniques. Pittsburgh, PA: UIRC, 1979) is available from the author. Discussion with such colleagues as Patrick McNamee, Larry Pacoe, Mary Page, and Susan Schilling has been invaluable. 相似文献