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Having a task partner affects lexical retrieval: Spoken word production in shared task settings
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Description: This data set is the empirical basis for the publication: Kuhlen, A. K., Abdel Rahman, R. (in press). Having a task partner affects lexical retrieval: Spoken word production in shared task settings, Cognition. Pictures of semantically related objects were named either by participants only, or by taking turns with their partner. Naming latencies increased with each additional category member, confirming cumulative semantic interference. Crucially, naming latencies increased more sharply when in previous trials within-category pictures were named by the partner (vs. presented only visually but named by no one). This effect is not simply due to hearing additional pictures being named (Experiment 1). In three experiments speakers successively named pictures, some of which were semantically related (e.g., several types of birds), in turns together with a partner. Within some semantic categories, half of the exemplars were named by the partner (Joint Naming condition); within other semantic categories half of the exemplars were named by neither partner nor participant (Single Naming condition). Thus, in both conditions participants named in close succession an equal number of semantically related pictures; what differed was whether, interspersed, additional pictures of the same category were named by the partner, or whether they were presented visually but were not named by anyone. This manipulation was imposed in a within-subject design. In Experiment 1 participants named pictures sitting immediately next to their task partner; in Experiment 2 participants merely believed they were naming pictures together with a physically remote partner; in Experiment 3 participants sat next to their partner but wore headphones that prevented them from hearing their partner name the pictures. The data was collected at: Department of Psychology, Humboldt-Universität zu Berlin, Berlin, Germany