Measuring product liking in preschool children: An evaluation of the Smileyometer and This or That methods

This article provides a detailed evaluation of two summative evaluation methods, This or That and Smileyometer. The methods’ reliability and validity were examined, using a sample of 113 preschoolers (ages from 33 to 90 months). The results show considerable promise for This or That for measuring preferences across entertainment products. This or That resulted in reliable and valid responses in preschool children aged four and older. Nevertheless, low reliability and validity scores were obtained for This or That in preschoolers younger than four years old. As for the Smileyometer results, preschoolers’ responses clearly indicated an overrepresentation of extreme positive scores that were inconsistent with their actual product preferences. Consequently, the validity of these young children’s responses evoked through the Smileyometer was not supported.