Parent outcome expectancies for purchasing fruit and vegetables: a validation
Parent outcome expectancies for purchasing fruit and vegetables: a validation
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DOI：
10.1017/s1368980007382499
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发表时间：
2007-03-01
影响因子：
3.2
通讯作者：
O'Donnell, Sharon
中科院分区：
文献类型：
--
作者：
Baranowski, Tom;Watson, Kathy;O'Donnell, Sharon
目标：验证四个量表 - 购买水果和购买蔬菜的结果预期，以及购买新鲜水果和购买新鲜蔬菜与其他形式的水果和蔬菜 (F&V) 的比较结果预期。 设计： 调查工具进行两次，间隔 6 周。 背景： 在超市和杂货店前招募；通过电话进行访谈。对象：一百六十一名有孩子（18 岁或以下）的食品购物者。结果：针对水果和蔬菜购买结果预期以及比较（新鲜与其他）水果和蔬菜购买结果预期指定了单维度量表。项目响应理论参数估计通过响应的难度揭示了项目序列中易于解释的模式。在控制了反应的社会意愿后，水果和蔬菜的购买以及新鲜水果的比较购买结果预期量表与家庭食品和饮料的可用性显着相关。比较新鲜蔬菜结果预期量表与家庭蔬菜供应量呈显着双变量相关，但在控制社会愿望后则不然。结论：这些量表可帮助更好地了解家庭食品和饮料购买决策。
Objective: To validate four scales - outcome expectancies for purchasing fruit and for purchasing vegetables, and comparative outcome expectancies for purchasing fresh fruit and for purchasing fresh vegetables versus other forms of fruit and vegetables (F&V).Design: Survey instruments were administered twice, separated by 6 weeks.Setting: Recruited in front of supermarkets and grocery stores; interviews conducted by telephone.Subjects: One hundred and sixty-one food shoppers with children (18 years or younger).Results: Single dimension scales were specified for fruit and for vegetable purchasing outcome expectancies, and for comparative (fresh vs. other) fruit and vegetable purchasing outcome expectancies. item Response Theory parameter estimates revealed easily interpreted patterns in the sequence of items by difficulty of response. Fruit and vegetable purchasing and fresh fruit comparative purchasing outcome expectancy scales were significantly correlated with home F&V availability, after controlling for social desirability of response. Comparative fresh vegetable outcome expectancy scale was significantly bivariately correlated with home vegetable availability, but not after controlling for social desirability.Conclusion: These scales are available to help better understand family F&V purchasing decisions.