Winett R A, Moore J F, Wagner J L, Hite L A, Leahy M, Neubauer T E, Walberg J L, Walker W B, Lombard D, Geller E S
Department of Psychology, Virginia Tech, Blacksburg 24061.
J Appl Behav Anal. 1991 Spring;24(1):95-105. doi: 10.1901/jaba.1991.24-95.
This study reports the results of one effort to help supermarket shoppers alter food purchases to make purchases (and meals) that are lower in fat and higher in fiber. A prototype interactive information system using instructional video programs, feedback on purchases with specific goals for change, weekly programs, and the ability to track user interactions and intended purchases was evaluated. The major dependent measure was users' actual food purchases as derived from participants' highly detailed supermarket receipts. After a 5- to 7-week baseline phase, participants were randomly assigned to an experimental or control condition for the 7- to 8-week intervention phase. A follow-up phase began 5 to 8 weeks after participants completed the intervention and discontinued use of the system. The results indicated that experimental participants, when compared to control participants, decreased high fat purchases and increased high fiber purchases during intervention, with evidence for some maintenance of effect in follow-up. Plans for increasing the use and impact of the system are discussed.
本研究报告了一项旨在帮助超市购物者改变食品购买行为，以购买脂肪含量更低、纤维含量更高的食品（及膳食）的努力成果。对一个使用教学视频节目、针对购买行为给出具体改变目标的反馈、每周节目以及跟踪用户互动和预期购买能力的交互式信息系统原型进行了评估。主要的因变量指标是根据参与者高度详细的超市收据得出的用户实际食品购买情况。在为期5至7周的基线阶段后，参与者被随机分配到实验或对照条件下，进行为期7至8周的干预阶段。在参与者完成干预并停止使用该系统5至8周后开始了随访阶段。结果表明，与对照参与者相比，实验参与者在干预期间减少了高脂肪食品的购买，增加了高纤维食品的购买，且在随访中显示出一定的效果维持。文中还讨论了增加该系统使用和影响力的计划。
