Validity evidences of the Buying Impulsiveness Scale in the Brazilian Context

Abstract The objective of this study was to obtain evidence of validity of an instrument to measure the tendency to buy impulsively. A version adapted to Brazil of a Buying Impulsiveness Scale was applied to 1296 Brazilians from all states of the federation, with a mean age of 35.8 years (SD = 12.8). The results indicated a scale with one-factor structure, just like the original instrument, with an adequate index of internal consistency. Positive correlations were found between impulse buying tendency, normative social influence, and traits of impulsiveness of the consumer. The instrument was also able to differentiate people who make shopping lists from those who do not do them, and people who prefer to go shopping alone from those who prefer to buy accompanied by someone else. The evidences found in the study provide support to the use of the instrument for the Brazilian context.

摘要 本研究旨在获取用于测量冲动购买倾向的量表的效度证据。本研究将适配巴西语境的购买冲动量表（Buying Impulsiveness Scale）施测于来自巴西联邦各州的1296名受试者，其平均年龄为35.8岁（标准差SD=12.8）。结果显示，该量表与原版量表一致，均为单因子结构，且内部一致性指标表现良好。研究发现，冲动购买倾向与规范性社会影响、消费者的冲动特质呈正相关。该量表还能够区分是否制定购物清单的人群，以及偏好独自购物与偏好结伴购物的人群。本研究获得的效度证据支持该量表可应用于巴西语境。