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Joos, Els; Vansteenwegen, Debora; Hermans, Dirk – Behavior Modification, 2012
People seem to differ in their conditionability, that is, the ease by which fear associations (neutral stimulus-unconditioned stimulus [CS-US] contingencies) are learned. Recently, the level of trait worry has been proposed as a predictor of heightened conditionability. The current research aimed to (a) further investigate this influence of…
Descriptors: Predictor Variables, Individual Differences, Anxiety, Fear
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Vervliet, Bram; Vansteenwegen, Deb; Hermans, Dirk – Learning and Motivation, 2010
Extinction is generally more fragile than conditioning, as illustrated by the contextual renewal effect. The traditional extinction procedure entails isolated presentations of the conditioned stimulus. Extinction may be boosted by adding isolated presentations of the unconditioned stimulus, as this should augment breaking the contingency between…
Descriptors: Conditioning, Learning Processes, Context Effect, Stimuli
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Meulders, Ann; Vervliet, Bram; Vansteenwegen, Debora; Hermans, Dirk; Baeyens, Frank – Learning and Motivation, 2011
Unpredictability of an unconditioned stimulus (US) typically produces context conditioning in animals and humans. We modified the Martians task--a computer game measuring learning of Pavlovian associations through conditioned suppression--for assessing context conditioning in humans. One between-subjects and one within-subjects study are reported.…
Descriptors: Animals, Stimuli, Classical Conditioning, Games
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Dirikx, Trinette; Hermans, Dirk; Vansteenwegen, Debora; Baeyens, Frank; Eelen, Paul – Learning & Memory, 2004
The present study investigated reinstatement of conditioned responses in humans by using a differential Pavlovian conditioning procedure. Evidence for reinstatement was established in a direct (fear rating) and in an indirect measure (secondary reaction time task) of conditioning. Moreover, the amount of reinstatement in the secondary reaction…
Descriptors: Stimuli, Fear, Classical Conditioning, Reaction Time
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Baeyens, Frank; Vansteenwegen, Debora; Beckers, Tom; Hermans, Dirk; Kerkhof, Ineke; De Ceulaer, Annick – Learning & Memory, 2005
Using a conditioned suppression task, we investigated extinction and renewal of Pavlovian modulation in human sequential Feature Positive (FP) discrimination learning. In Experiment 1, in context a participants were first trained on two FP discriminations, X[right arrow]A+/A- and Y[right arrow]B+/B-. Extinction treatment was administered in the…
Descriptors: Discrimination Learning, Classical Conditioning, Contingency Management, Sequential Learning