Test-retest Reliability of the Persian version of the questionnaire Affordances in the Home Environment for Motor Development-Infant Scale and its Relation with Infant Movement

Background: since the home environment is the first place on which children (particularly, those under two years of experience and development) are highly dependent, the existence of a questionnaire for evaluating this environment is necessary. therefore, in the present study, the test-retest reliability of the affordance in the home environment for motor development-infant scale (ahemd-is) is reported. methods: the aim to this study was to investigate certain psychometric characteristics of the ahemd-is. therefore, 112 mother-infant (3–18 months old infants) couples participated in this study. the ahemd and the ages and stages questionnaire (asq) were completed by all the participants and 46 participants re-completed the questionnaire for investigating their repeatability. finally, the collected data were analyzed using tests of correlation coefficients in spss-21. results: the findings of the ahemd-is enjoys acceptable reliability. the intraclass coefficient (icc) of the total score of the questionnaire was 0.78, the intraclass coefficient of physical space was 0.96, the intra-class coefficient of a variety of stimuli was 0.93, the intra-class coefficient of the gross motor toys was 0.93, and the intra-class coefficient for fine motor toys was 0.96. in addition, the concurrent validity indicated that the section on the diversity of stimuli and toys for fine movements had a significant correlation with the motor sections of the asq (p<0.5). conclusion: the results of this study indicated that the ahemd-is is a reliable instrument for 3–18 month old infants.