Uengoer Metin, Klass Anne, Tegenthoff Martin, Lissek Silke
Faculty of Psychology, Philipps-Universität Marburg, Marburg, Germany.
Department of Neurology, BG University Hospital Bergmannsheil, Ruhr-University Bochum, Bochum, Germany.
Behav Processes. 2020 Jul;176:104107. doi: 10.1016/j.beproc.2020.104107. Epub 2020 Apr 27.
In one human predictive learning experiment, we demonstrated that an individual's propensity for response recovery following discrimination reversal learning is stable over time. Participants received four sessions of training with the first three sessions being separated by one week each, while the last session was conducted after a delay of four weeks. During each session, participants initially received discrimination training (E+, F-) in one context, followed by discrimination reversal training (E-, F+) in another context. Sessions each completed with a test, in which the stimuli were presented in the context of initial acquisition. Each test revealed response recovery according to the initially acquired stimulus-outcome contingencies. Furthermore, the strength of response recovery was correlated across sessions that were separated by one week (Sessions 1 and 2), and across sessions separated by four weeks (Sessions 3 and 4). Overall, intra-individual test behavior was stable in 87 % of participants across two sessions, and in 79 % of participants across four sessions. Our results indicate that inter-individual differences in response recovery are a reliable phenomenon, which is a finding that is not accounted by current theories of context-dependent learning.
在一项人类预测性学习实验中，我们证明了个体在辨别逆转学习后反应恢复的倾向随时间推移是稳定的。参与者接受了四个阶段的训练，前三个阶段各间隔一周，而最后一个阶段在四周后进行。在每个阶段中，参与者最初在一种情境下接受辨别训练（E+，F-），随后在另一种情境下接受辨别逆转训练（E-，F+）。每个阶段都以一次测试结束，测试中刺激在最初习得的情境下呈现。每次测试都显示出根据最初习得的刺激-结果偶然性而出现的反应恢复。此外，在间隔一周的阶段（第1和第2阶段）以及间隔四周的阶段（第3和第4阶段）之间，反应恢复的强度存在相关性。总体而言，87%的参与者在两个阶段中的个体内测试行为是稳定的，79%的参与者在四个阶段中的个体内测试行为是稳定的。我们的结果表明，反应恢复中的个体间差异是一种可靠的现象，这一发现是当前情境依赖学习理论所无法解释的。
