A feel for disgust: tactile cues to pathogen presence.

One function of disgust is to act as a pathogen-avoidance system preventing contact with substances harbouring disease-causing organisms. Avoiding pathogens, however, requires systems for their detection. Whereas previous research on disgust has focused on visual and olfactory detection cues, one largely overlooked modality is touch. Here we examine whether tactile cues play a role in pathogen detection and activate the disgust response. Participants briefly touched and then rated stimuli varying along dimensions predicted to correlate with pathogen presence: moisture, temperature, and consistency. Results show that participants rated wet stimuli and stimuli resembling biological consistencies as more disgusting than dry stimuli and stimuli resembling inanimate consistencies, respectively. No main effect for temperature was found. We report on predicted interactions, the relationship between disgust ratings and perceived infection risk, and individual differences. Taken together, these data suggest that touch is an important modality providing information for disgust-related processes.

Physical activity and quality of life--the complementary influence of self-efficacy for physical activity and mental health difficulties.

BACKGROUND: Studies proposed that the physical activity and quality of life (QoL) relationship may not be entirely direct but mediated through other variables; however, few studies have examined these relationships in diverse population's older adults. PURPOSE: This study aims to examine the roles of self-efficacy and mental health difficulties in the physical activity and QoL relationship and to determine if demographic characteristics alter these relationships. METHODS: One hundred ninety-six older adults completed measures of physical activity, self-efficacy, mental health difficulties, and QoL. Two-multilevel structural models were tested to determine the relationship between physical activity and QoL. RESULTS: Both structural models suggested that the relationship between physical activity and QoL is indirect, but the models were not significantly different. In model 1, we observed a positive linear relationship between physical activity and self-efficacy. In turn, self-efficacy was negatively associated with poor mental health difficulties and positively associated with QoL. Mental health difficulties were also negatively associated with QoL. In model 2, physical activity was positively associated with self-efficacy and negatively associated with mental health difficulties; in turn, self-efficacy was positively associated with QoL, whereas mental health difficulties were negatively associated with QoL. CONCLUSIONS: Overall, our findings suggest that self-efficacy and mental health have intermediary roles in the relationship between physical activity and QoL in a diverse sample of older adults. Prospective studies are needed to determine whether self-efficacy and mental health difficulties are complementary or one or the other accounts for more variance in the relationship between physical activity and QoL.

Terrorism after 9/11: reactions to simulated news reports.

Two experiments examined participants' responses to simulated news reports of terrorist attacks. Participants were told that a nondemocratic nation had sponsored strikes on military and cultural or educational sites in the United States. Participants in both experiments reacted more conflictually to terrorist attacks on military sites than to those on cultural or educational sites. Their conflictual responses on a thermometer scale escalated after repeated attacks. When tested in 2002 and 2004, 1 and 3 years after the real World Trade Center attacks, participants' reactions were more conflictual than those of participants examined before September 11, 2001. Furthermore, current participants' fear and anger increased, and forgiveness decreased, over repeated simulated attacks. Participants lower in masculinity showed more fear and less anger than did those higher in masculinity. This study shows that terrorist attacks produce more than simple terror.

Soy intake is related to a lower body mass index in adult women.

BACKGROUND: Experimental and epidemiologic studies suggest that soy may promote weight loss. AIM OF THE STUDY: The goal of this study was to examine the relation of soy intake with body weight over the lifespan of women with Caucasian, Japanese, and Native Hawaiian ancestry. METHODS: We assessed the relation between lifetime soy consumption and body mass index (BMI) among 1,418 women in Hawaii. All subjects reported anthropometric measures, regular diet, and soy intake throughout life. The lifetime soy questionnaire was completed again by a subset of 356 women 5 years after study entry and the kappa values indicated moderate agreement. We regressed soy intake on BMI at study entry and at age 21 while controlling for confounding variables, computed least square means, and performed trend tests. RESULTS: Higher soy consumption in adulthood was related to a lower BMI (P=0.02). This association was only significant for Caucasian women and for postmenopausal subjects. The women in the highest category also experienced a smaller annual weight change since age 21 (by 0.05 kg/year) than the low soy intake group (P=0.02). We observed no association between early life soy intake and BMI. High vegetable consumption was significantly associated with a higher soy intake among Caucasian women. CONCLUSIONS: In this study, women consuming more soy during adulthood had a lower BMI, but the relation was primarily observed for Caucasian and postmenopausal subjects. This indicates that the association may be due to other nutritional factors and behaviors common in women with high soy intake.