Psychometric validation of knowledge test developed on nutrition and nutri-rich foods

A test was constructed to measure the rural women between 15 to 49 years old knowledge level on nutrition related aspects and nutri-rich foods during 2022-23 in the Nutri-SMART Village (NSV) of KVKs. The test was developed using scientific procedures including item collection through preliminary screening, item selection based on expert opinions, item analysis (difficulty index, discrimination index), testing reliability and validity of knowledge test and final administration to respondents. Total 75 items were collected and sent to 150 nutrition and home science experts for relevancy test on five-point continuum through google forms and 50 judges responded within the stipulated time. Out of 75 items, 48 items were selected for item analysis based on the mean score. Selected items were administrated to 60 women’s between 15-49 years old age group of Narmadapuram and Jabalpur district, Madhya Pradesh for item analysis. Item difficulty index (Pi) and item discrimination index were used for item analysis. After estimating the item difficulty and discrimination index values, 37 items were tested for the validity by point biserial correlation (rpbis) and also experts’ opinion were used. Split-half technique was used for testing the reliability of the scale in which correlation coefficient (r) was found to be 0.875.