The Psychological Record

, Volume 40, Issue 4, pp 555–564 | Cite as

Factors Affecting Sequential Behavior in a Point-Earning Task

  • William T. Boyd
  • Arthur Gutman


Prior research by Schwartz (1982) reveals that in a sequential behavior task known as partial reward 50% (PR50), college students show strong sequence stereotypy when instructed to earn points, and sequence variability when instructed to find rules governing why points are being generated. A study by Gross and Gutman (1988) reveals that PR50 subjects instructed to earn points behave much the same as subjects who are instructed to find rules. However, that study used a much smaller reward magnitude than Schwartz’s. The present results show that point-earning PR50 subjects act like rule finders regardless of the magnitude of reward. These findings cannot be explained by minor procedural differences, but may be explained by the explicit manner in which instructions are worded and/or social factors embedded in how the PR50 procedure is administered.


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  1. BARRETT, D. H., DIETZ, S. M., GAYDOS, G. R., & QUINN, P. C. (1987). The effects of programmed contingencies and social conditions on response stereotypy with humans. The Psychological Record, 37, 489–505.CrossRefGoogle Scholar
  2. GROSS, D. K., & GUTMAN, A. (1988). Effects of schedule and length of training on reward-induced stereotypy and negative transfer in humans. The Psychological Record, 38, 567–594.CrossRefGoogle Scholar
  3. SCHWARTZ, B. (1980). Development of complex stereotyped behavior in pigeons. Journal of the Experimental Analysis of Behavior, 33, 153–166.CrossRefGoogle Scholar
  4. SCHWARTZ, B. (1981). Control of complex, sequential operants by systematic visual information in pigeons. Journal of Experimental Psychology: Animal Behavior Processes, 7, 171–181.Google Scholar
  5. SCHWARTZ, B. (1982). Reinforcement-induced behavioral stereotypy: How not to teach people to discover rules. Journal of Experimental Psychology: General, 111, 23–59.CrossRefGoogle Scholar
  6. VOGEL, A., & ANNAU, Z. (1973). An operant discrimination task allowing variability of reinforced response patterning. American Journal of Psychology, 90, 663–674.Google Scholar

Copyright information

© Association of Behavior Analysis International 1990

Authors and Affiliations

  • William T. Boyd
    • 1
  • Arthur Gutman
    • 1
  1. 1.School of PsychologyFlorida Institute of TechnologyMelbourneUSA

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