How well do the theory of reasoned action and theory of planned behaviour predict intentions and attendance at screening programmes? A meta-analysis

Meta-analysis was used to quantify how well the Theories of Reasoned Action and Planned Behaviour have predicted intentions to attend screening programmes and actual attendance behaviour. Systematic literature searches identified 33 studies that were included in the review. Across the studies as a whole, attitudes had a large-sized relationship with intention, while subjective norms and perceived behavioural control (PBC) possessed medium-sized relationships with intention. Intention had a medium-sized relationship with attendance, whereas the PBC–attendance relationship was small sized. Due to heterogeneity in results between studies, moderator analyses were conducted. The moderator variables were (a) type of screening test, (b) location of recruitment, (c) screening cost and (d) invitation to screen. All moderators affected theory of planned behaviour relationships. Suggestions for future research emerging from these results include targeting attitudes to promote intention to screen, a greater use of implementation intentions in screening information and examining the credibility of different screening providers.     

Intention versus identification as determinants of adolescents’ health behaviours: evidence and correlates

The present study used a within-participants design to (a) assess the predictive validity of prototype identification versus intention for adolescents’ health behaviours and (b) examine whether control of health behaviour by intention relative to identification is associated with key individual difference variables. Participants were school children (N = 136) who completed measures of intention, perceived behavioural control and prototype identification for 14 health-related behaviours at Time 1, and reported their behaviour 2 weeks later (Time 2). A hierarchical regression showed that prototype identification and intention exhibited similar predictive validity in the prediction of adolescents’ health behaviour. Importantly, identification contributed an additional 6% to the variance in behaviour, after controlling for intention and perceived behavioural control from the theory of planned behaviour [TPB: Ajzen, I. (1991 Ajzen, I. 1991. The theory of planned behavior. Organizational Behavior and Human Decision Processes, 50: 179–211. [Crossref], [Web of Science ®] , [Google Scholar]). The theory of planned behavior. Organizational Behavior and Human Decision Processes, 50, 179–211.]. Additional analyses showed that greater social comparison tendencies, lower agreeableness, greater intellect and less emotional stability were all related to greater control of behaviour by prototype identification. The theoretical and practical implications of these findings are discussed.     

Habit as moderator of the intention–physical activity relationship in older adults: a longitudinal study

This longitudinal study examined whether habit strength moderates the intention–physical activity (PA) relationship in older adults, within the framework of the attitude–social influences–efficacy (ASE) model and the theory of planned behaviour (TPB). A total of 1836 older adults (M _age?=?62.95?years, SD _age?=?8.17) completed a questionnaire on social cognitive constructs and PA habit strength at baseline, and six?months later a measure of PA. Three PA habit groups (i.e. low, medium and high) were composed, based on tertiles of the mean index score. Multi-group structural equation modelling analyses showed that intention significantly determined PA behaviour only in participants with a low or medium habit strength towards PA. This result suggests that PA is not intentional at high levels of habit strength and demonstrates the usefulness of incorporating habit in the ASE and TPB models. Results also showed that about half of the participants with a strong PA habit did not meet the recommended PA level. As strong habits may prevent intentional behavioural change and may hinder the receptiveness and openness for informational PA change strategies, additional intervention strategies, such as awareness raising and the use of implementation intentions, are needed for strongly habitual, but insufficiently active older adults.     

Deconstructing the Doctrine of Double Effect

This paper examines the doctrine of double effect as it is typically applied. The difficulty of distinguishing between what we intend and what we foresee is highlighted. In particular, Warren Quinn's articulation of that distinction is examined and criticised. It is then proposed that the only credible way that we can be said to foresee that a harm will result and mean something other than that we intend it to result, is if we are not certain that that harm will result. The ramifications of this are explored. The paper concludes with a moral evaluation of a variety of cases that have harmful outcomes. It is recommended both that we abandon the doctrine of double effect and that we cease to describe cases with harmful outcomes in a dishonest way.     

创业环境与大学生创业意向的关系:有调节的中介模型

本研究提出一个有调节的中介模型,揭示了创业环境\"怎样\"影响大学生创业意向及这种影响\"何时\"更强或更弱。采用创业环境量表、创业动机量表、创业意向量表对647名大学生进行研究。研究显示:(1)创业动机在创业环境与大学生创业意向之间起部分中介作用;(2)性别调节了创业环境通过创业动机影响大学生创业意向的中介过程的前半路径。因此,创业环境对大学生创业意向的影响是有调节的中介效应,研究结论对提高大学生的创业意向具有重要的理论与实证价值。     

包容性领导与下属揭发意愿的关系:一个被调节的中介效应模型

通过332组在职MBA学员样本数据分析验证了包容性领导对下属揭发意愿的影响机制,结果表明:(1)包容性领导显著正向影响下属的揭发意愿;(2)组织支持感在包容性领导与揭发意愿之间起完全中介作用;(3)上司组织代表性调节包容性领导与下属组织支持感之间的关系,上司的组织代表性越高,二者间的正向关系越强;(4)上司组织代表性调节组织支持感对包容性领导与下属揭发意愿之间关系的中介作用。