Can detection of highly stable individual differences in temperament in early childhood be enhanced using measures of resting heart rate (HR) and respiratory sinus arrhythmia (RSA)? The current longitudinal study (N = 216, 50% female; two to four years old) tested the statistical moderating effects of longitudinal change in resting HR and RSA on stability of mother-rated temperament. Children with the smallest decreases in resting HR and smallest increases in resting RSA had the most stable individual differences in effortful control. In contrast, those with the largest increases in resting RSA had the most stable individual differences in surgency. Including information on HR and RSA can be useful, though the effects depend on the trait and physiological indicator in question. 相似文献
Objective: Medical treatments take place in social contexts; however, little research has investigated how social modelling might influence treatment outcomes. This experimental pilot study investigated social modelling of treatment effectiveness and placebo treatment outcomes.
Design: Fifty-nine participants took part in the study, ostensibly examining the use of beta-blockers (actually placebos) for examination anxiety. Participants were randomly assigned to observe a female confederate report positive treatment effects (reduced heart rate, relaxed, calm) or feeling no different.
Main outcome measures: Heart rate, anxiety and blood pressure were assessed, as were symptoms and attributed side effects.
Results: Heart rate decreased significantly more in the social modelling compared to control condition, p = .027 (d = .63), and there were trends towards effects in the same direction for both anxiety, p = .097 (d = .46), and systolic blood pressure, p = .077 (d = .51). Significant pre-post placebo differences in heart rate, anxiety and diastolic blood pressure were found in the social modelling group, ps < .007 (ds = .77–1.37), but not the control condition, ps > .28 (ds = .09–.59).
Conclusions: Social observation of medication effectiveness enhanced placebo effectiveness in heart rate, and showed a trend towards enhancing treatment effectiveness in both anxiety and systolic blood pressure. Social modelling may have utility in enhancing the effectiveness of many active medical treatments. 相似文献
I discuss top-down modulation of perception in terms of a variable Bayesian learning rate, revealing a wide range of prior hierarchical expectations that can modulate perception. I then switch to the prediction error minimization framework and seek to conceive cognitive penetration specifically as prediction error minimization deviations from a variable Bayesian learning rate. This approach retains cognitive penetration as a category somewhat distinct from other top-down effects, and carves a reasonable route between penetrability and impenetrability. It prevents rampant, relativistic cognitive penetration of perception and yet is consistent with the continuity of cognition and perception. 相似文献
Midlife smoking continues to be a problem in Australia, with substantial personal, social, and financial costs. Yet the specific characteristics and needs of this group have been largely overlooked. Here we review the literature for the purposes of (1) profiling the characteristics of midlife smokers and (2) assessing the effectiveness of interventions for this group. This review shows midlife smokers differ from younger smokers in important ways: they underestimate the costs of smoking and overestimate the benefits, and are less confident in their ability to quit. The few studies investigating age‐tailored interventions have shown these to be effective in reducing midlife smoking. Still, research in this area is limited, with only one study conducted during the past decade that investigated smoking interventions for those in midlife. Clearly there is a need for smoking cessation interventions for midlife smokers that are tailored to the specific beliefs and needs of this unique group. Future research should focus on establishing the best methods for interventions for those individuals who are resistant to earlier interventions and still continue smoking into midlife. Interventions may benefit from incorporating recent evidence about the less obvious costs associated with midlife smoking, including later‐life neurological disease. 相似文献