Paradigma - Centro de Ciências e Tecnologia do Comportamento, Brazil.
Instituto Nacional de Ciência e Tecnologia sobre Comportamento, Cognição e Ensino (INCT-ECCE), Brazil.
J Exp Anal Behav. 2021 Jan;115(1):405-420. doi: 10.1002/jeab.649. Epub 2020 Dec 1.
Contextual control is a key aspect in equivalence research to support the claim that stimuli may have multiple functions or symbols may have multiple meanings. The present study investigated the contextual control of multiple derived stimulus functions in two experiments. In Experiment 1, equivalence classes were formed and one stimulus set from each class was used to establish two different functions: one via positive reinforcement (key-pressing) and another via negative reinforcement (button clicking), both under contextual control of two different background colors. Later, other stimuli from the equivalence class were presented on those background colors and contextual control of multiple derived stimulus functions was assessed. Experiment 2 added a third background in which no programmed response was reinforced, that is, responses were extinguished. Transfer-of-function tests revealed contextual control of three different functions, including derived extinction. Implications for equivalence relations as a behavior-analytical model of symbolic functioning are discussed.
语境控制是等价关系研究中的一个关键方面，它支持这样一种观点，即刺激物可能具有多种功能，或者符号可能具有多种含义。本研究在两个实验中调查了多个衍生刺激功能的语境控制。在实验 1 中，形成了等价类，并使用每个类的一个刺激集来建立两个不同的功能：一个通过正强化（按键），另一个通过负强化（按钮点击），两者都受到两种不同背景颜色的语境控制。后来，在这些背景颜色上呈现了等价类中的其他刺激，评估了多个衍生刺激功能的语境控制。实验 2 增加了第三种背景色，在这种背景色中，没有强化任何有计划的反应，也就是说，反应被消退。功能转移测试显示了三个不同功能的语境控制，包括衍生的消退。讨论了等价关系作为符号功能的行为分析模型的意义。
