Terrell Heather K, Derenne Adam, Weatherly Jeffrey N
Am J Psychol. 2014 Summer;127(2):215-31. doi: 10.5406/amerjpsyc.127.2.0215.
The present studies used exploratory and confirmatory factor analyses to explore the degree to which probability discounting processes are similar to delay discounting processes. To determine whether these processes are similar, 2 questions were addressed: the degree to which probability discounting outcomes can be categorized into multiple domains (as demonstrated for delay discounting) and whether the inverse magnitude effect would be observed for nonmonetary outcomes. An exploratory factor analysis was conducted using data from the fill-in-the-blank method (Study 1), followed by a confirmatory factor analysis using data from a multiple-choice method (Study 2) as a replication. These studies provide support for the idea that outcomes can be subdivided into multiple domains. Generally, the discounting rates were steeper for tangible outcomes than nontangible outcomes, and a magnitude effect was observed that was consistent with, rather than the inverse of, that observed for delay discounting tasks. Complexities related to the relationship between probability discounting processes and delay discounting processing are discussed.
本研究采用探索性和验证性因素分析，以探究概率折扣过程与延迟折扣过程的相似程度。为确定这些过程是否相似，研究探讨了两个问题：概率折扣结果可被分类到多个领域的程度（如延迟折扣所示），以及非货币结果是否会观察到反向量级效应。首先使用填空法的数据进行探索性因素分析（研究1），随后使用多项选择法的数据进行验证性因素分析（研究2）作为重复验证。这些研究支持了结果可细分为多个领域的观点。一般来说，有形结果的折扣率比无形结果更陡，并且观察到的量级效应与延迟折扣任务中观察到的一致，而非相反。文中还讨论了与概率折扣过程和延迟折扣过程之间关系相关的复杂性。
