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UNDERMATCHING AND OVERMATCHING: THE FIXED‐RATIO CHANGEOVER REQUIREMENT
Author(s) -
Pliskoff Stanley S.,
Fetterman J. Gregor
Publication year - 1981
Publication title -
journal of the experimental analysis of behavior
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.75
H-Index - 61
eISSN - 1938-3711
pISSN - 0022-5002
DOI - 10.1901/jeab.1981.36-21
Subject(s) - changeover , computer science , response time , matching (statistics) , statistics , mathematics , telecommunications , computer graphics (images) , transmission (telecommunications)
Concurrent variable‐interval two‐minute and six‐minute schedules were arranged while the fixed‐ratio changeover requirement was varied among one, two, and four responses. A four‐response requirement produced overmatching in the response and time data. A one‐response requirement produced consistent undermatching in the time data but mixed results in the response data. The two‐response requirement showed undermatching in the time data and overmatching in the response data. The results are discussed in relation to previous research using changeover requirements of five and ten responses, which produced clear tendencies toward overmatching, especially with response data. Taken together, these findings suggest that matching is not a unique result, and that undermatching or overmatching can be produced by continuous variation of the changeover requirements.