Question

omar has developed an intervention to improve the relationship between parents and their preschool-aged children. to evaluate the effectiveness of his intervention, omar video-records parents interacting with their children and has two research assistants score the level of warmth in each interaction. omar then compares the two sets of scores to examine – reliability. he finds a high positive correlation of – between the two raters’ scores. if the observers were rating a categorical variable, omar could have also looked at the – statistic.

Answer 1

Answer:

Omar has developed an intervention to improve the relationship between parents and their preschool-aged children. To evaluate the effectiveness of his intervention, Omar video-records parents interacting with their children and has two research assistants score the level of warmth in each interaction. Omar then compares the two sets of scores to examine interrater reliability. He finds a high positive correlation of r = .87

between the two raters’ scores. If the observers were rating a categorical variable, Omar could have also looked at the kappa  statistic.

Explanation: