Centre for Research in Social Attitudes, Department of Psychology, University of Sheffield, Sheffield S10 2TP, United Kingdom.
Appetite. 2012 Feb;58(1):28-33. doi: 10.1016/j.appet.2011.09.022. Epub 2011 Oct 4.
Interventions to increase fruit and vegetable intake typically apply manipulations that do not distinguish fruits and vegetables as separate food groups. This study aimed to compare the efficacy of separate implementation intention instructions with a combined implementation intention instruction on separate indices of fruit and vegetable intake, and investigate the written content of implementation intentions for behavioural strategies focusing on the 'target' action of consumption or the 'preparatory' actions that enable consumption. Participants (N=580) were randomised to one of three conditions (control; separate implementation intentions; combined implementation intention). The findings were: (a) the combined instruction was successful in increasing fruit intake but not vegetable intake, whereas the separate instructions generated a significant increase in both fruit intake and vegetable intake, and (b) 'target' strategies appear more beneficial for increasing fruit intake where as preparatory strategies show some promise for vegetable intake. The conceptual and practical implications of this work are discussed in relation to future research into increasing fruit and vegetable consumption.
干预措施通常采用不区分水果和蔬菜作为不同食物组的操作来增加水果和蔬菜的摄入量。本研究旨在比较单独实施意图指令和组合实施意图指令对水果和蔬菜摄入量的单独指标的功效，并研究针对消费“目标”行为或促进消费的“预备”行为的实施意图的书面内容。参与者（N=580）被随机分配到三个条件之一（对照组；单独实施意图；组合实施意图）。研究结果表明：（a）组合指令成功增加了水果摄入量，但没有增加蔬菜摄入量，而单独的指令则显著增加了水果和蔬菜的摄入量；（b）“目标”策略似乎更有利于增加水果摄入量，而预备策略对增加蔬菜摄入量显示出一定的潜力。本研究结果对未来增加水果和蔬菜消费的研究具有重要的理论和实践意义。
