A researcher tested whether exposure to images of very thin fashion models causes young women to be dissatisfied with their own body,compared to exposure to athletic body images or neutral (non-body)images.She randomly assigned 120 women from an introductory psychology course to one of three exposure conditions: very thin female images,athletic female images,or neutral images (e.g.,household objects).Each condition had 10 images,projected individually on a large screen.The young women participated in small groups.Each image was displayed for 1 minute,for a total of 10 minutes of exposure.After viewing each image,participants wrote for 30 seconds a description of the image (the participants were led to believe their memory was being tested).After viewing the images,the women completed a questionnaire about satisfaction with their body.Negative scores indicate body dissatisfaction and positive scores indicate satisfaction with their body.The mean scores for each condition were as follows: Suppose the .95 confidence interval (CI)for the very thin condition is -1.75 to -2.50; the CI for the Athletic condition is -.75 to -1.25; and the CI for the neutral condition is 0 to .50.What claim would you make based on the estimates of the population means for the three groups in the experiment based on a comparison of these confidence intervals?

Question

A researcher tested whether exposure to images of very thin fashion models causes young women to be dissatisfied with their own body,compared to exposure to athletic body images or neutral (non-body)images.She randomly assigned 120 women from an introductory psychology course to one of three exposure conditions: very thin female images,athletic female images,or neutral images (e.g.,household objects).Each condition had 10 images,projected individually on a large screen.The young women participated in small groups.Each image was displayed for 1 minute,for a total of 10 minutes of exposure.After viewing each image,participants wrote for 30 seconds a description of the image (the participants were led to believe their memory was being tested).After viewing the images,the women completed a questionnaire about satisfaction with their body.Negative scores indicate body dissatisfaction and positive scores indicate satisfaction with their body.The mean scores for each condition were as follows:  Suppose the .95 confidence interval (CI)for the very thin condition is -1.75 to -2.50; the CI for the Athletic condition is -.75 to -1.25; and the CI for the neutral condition is 0 to .50.What claim would you make based on the estimates of the population means for the three groups in the experiment based on a comparison of these confidence intervals?

Quizplus · Accepted Answer

The Answer is The confidence intervals for the three conditions do not overlap; based on this we can conclude that the population means for the three groups differ.Body dissatisfaction was greatest in the very thin image condition,followed by the athletic image condition.The least amount of body dissatisfaction was in the neutral image condition.

A Researcher Tested Whether Exposure to Images of Very Thin