The impact of self-efficacy and implementation intentions-based interventions on fruit and vegetable intake among adults

This study tested the effect of interventions designed for people who do not eat yet the recommended daily fruit and vegetable intake (FVI) but have a positive intention to do so. Adults (N?=?163) aged 20–65 were randomised into four groups: implementation intentions (II group), self-efficacy (SE group), combination of II?+?SE group) and a control group receiving written information on nutrition. Study variables were measured at baseline, post-intervention and at 3-month follow-up. At follow-up, compared to the control group, FVI increased significantly in the II and II?+?SE groups (1.5 and 1.9 servings per day, respectively). Most psychosocial variables significantly increased compared to the control group, with the exception of SE for vegetable intake (VI). Moreover, at 3-month follow-up, change in FVI was mediated by changes in fruit intake (FI) intention and VI action planning. In conclusion, II interventions were efficient to increase FVI, with or without consideration for the development of SE. Thus, future studies should favour the adoption of this approach to bridge the intention–behaviour gap for FVI.     

Gender differences in perceived physical self-efficacy among older individuals

Gender differences in perceived physical self-efficacy were investigated in 90 subjects, stratified by sex and age (45 to 54 yr., 55 to 64 yr., and 65 to 74 yr.). Application of the scale by Ryckman, Robbins, Thornton, and Cantrell yielded scores for total perceived physical self-efficacy, perceived physical ability, and confidence in physical self-presentation. Men showed greater efficacy than women on the first two scales. There was no evidence of an age effect in perceived physical self-efficacy.     

Human factors engineering in computerized mental health care delivery

There has been strong clinical resistance to the use of automation in mental health. At least part of the resistance may be due to the researcher’s failure to understand the psychological factors involved in the human-computer relationship. This paper reviews human factors research as it may be related to computerized systems in mental health. Human factors considerations are specifically applied to: design and implementation of computer systems, patient-computer interaction, mental health staff-computer interaction, and computer output.     

Asking questions changes behavior: mere measurement effects on frequency of blood donation.

OBJECTIVE: This research examined the impact of completing a questionnaire about blood donation on subsequent donation behavior among a large sample of experienced blood donors. DESIGN: Participants (N=4672) were randomly assigned to an experimental condition that received a postal questionnaire measuring cognitions about donation or a control condition that did not receive a questionnaire. MAIN OUTCOME MEASURES: Number of registrations at blood drives and number of successful blood donations were assessed using objective records both 6 months and 12 months later. RESULTS: Findings indicated that, compared to control participants, the mean frequency of number of registrations at blood drives among participants in the experimental group was 8.6% greater at 6 months (p<.0.007), and was 6.4% greater at 12 months (p<.035). Significant effects were also observed for successful blood donations at 6 months (p<.001) and 12 months (p<.004). CONCLUSION: These findings provide the first evidence that the mere measurement is relevant to promoting consequential health behaviors. Implications of the research for intervention evaluation are discussed.     

Cross-Cultural Testing of Three Social Cognitive Theories: An Application to Condom Use1

The aim of this study was to test the cross-cultural validity of Fishbein and Ajzen's theory of reasoned action, Ajzen's theory of planned behavior, and Triandis' theory of interpersonal behavior and to apply them to understanding the intention to use a condom with a new partner in three ethnocultural communities: Latin American, English-speaking Caribbean, and South Asian. All respondents were recruited from multiple ethnocultural-venues using predetermined sampling frames and quotas for each community. The results indicated that the three theories have cross-cultural validity, but the theories of Ajzen and Triandis performed better than the theory of Fishbein and Ajzen. It is recommended that role beliefs and moral norm (personal normative belief) be added to Ajzen's model to maximize its predictive and explanatory ability.     

Argument from Consequences and the Urge to Polarize

Polarization is a generalized feature of intellectual life. Few authors however have studied polarities as they actually occur in every day life and discourse. This paper proposes two hypotheses to account for the pervasiveness of polarities. The first relates to uncertainty. Almost everything that touches our lives is filled with irreducible uncertainty. As a rhetoric, polarization uses arguments from (future) consequences in order to manage the future. The second hypothesis relates to phenomenology: body and behavior incorporate tensions or dualistic properties which are easily reproduced in language and thinking. Polarized thinking helps people to imagine extremes so that they may better anticipate the spectrum of possibilities available for action. The article concludes with remarks on the dangers of (over)generalizing and universalizing particulars (or extremes) in polarity based argumentation.