ICA edition:58 location:Montreal, Canada date:22-26 May 2008
This study proposes to consider first order cultivation data as generated by a 2 step process: the first step consists of a “raw feel” process followed by a second step of “response mapping”. To illustrate the existence and importance of the second step, the study offers an empirical statistical test of heaping on multiples of five (Roberts & Brewer, 2001). Results indicate highly significant heaping on fivefold numbers in participant responses (N =1251) to all classic first order estimation questions, independent of item domain. The systematic recurring peaked answering pattern is suggestive of a less than perfect quantity representation and/ or estimation capacity of the human mind. Methodological implications for empirical small effect size research with vague 100 point rating scales are examined.