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The Hierarchy Network Model For The Organization Of Semantic Memory

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Experiment 1
Experiment 1 is a partial-conceptual replication of Collins and Quillian’s (1969) study on the hierarchy network model for the organization of semantic memory. The purpose of experiment 1 was to test Collins and Quillian’s hypothesis stating that response time for category searching should be slower as a function of an increasing number of levels separating a category subject and it’s predicate term on the semantic hierarchy model. We use the same basic procedure as Collins and Quillian’s experiment, except that we utilize a single category for predicate terms as opposed to multiple categories at level 2 of the semantic hierarchy model.
Method
Participants and Apparatus. 23 NYU students, taking lab in human cognition, received course credit for their participation in the experiment. The experiment was administered on standard PC’s or Macintosh computers over a single class period.
Design and Stimuli. The experiment was run using a within-subject design, and consisted of one independent variable. The independent variable is the number of levels in the hierarchy separating the subject and predicate terms. There are three levels of the independent variable – 0 levels of separation, 1 level of separation, and 2 levels of separation. The type of sentence stimulus presented to subjects, whether it was defined by a “property” or a “superset”, was an additional factor taken into account when analyzing the data. Stimuli consisted of 144 TRUE and FALSE sentences

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