Retesting with the same test is a way of determining a test’s ____________.

Dr. Wilson uses techniques from various forms of therapy to treat her patients. Which therapeutic approach does Dr. Wilson follow? 

Dr. Welham is a medical physician by training and specializes in treating psychological disorders, occasionally prescribing medications to his patients with very serious problems. Which type of therapist is Dr. Welham? 

A researcher was interested in evaluating an intervention that would impact body mass. The researcher was also interested in evaluating if there were sex differences in body mass. The researcher recruited 10 males and 10 females for the study. For the 10 males, 5 males were randomly assigned to the intervention and 5 males were randomly assigned to a control condition. Similarly, for the 10 females, 5 females were randomly assigned to the intervention and 5 females were randomly assigned to a control condition. The F in the table above is a ratio of Signal/Noise. What number in the table is a measure of “Noise”?

What is the range of the covariance between 2 variables?

A researcher was interested in evaluating an intervention that would impact body mass. The researcher was also interested in evaluating if there were sex differences in body mass. The researcher recruited 10 males and 10 females for the study. For the 10 males, 5 males were randomly assigned to the intervention and 5 males were randomly assigned to a control condition. Similarly, for the 10 females, 5 females were randomly assigned to the intervention and 5 females were randomly assigned to a control condition. Based on the information provided, what type of research design was used in this study?

5 older adults volunteered for a study interested in determining the strength of older adults. The 5 older adults were asked to do as many pull-ups as they could. The number of pull-ups for the 5 participants is listed below.  The pull-up results (X) were: 5, 2, 2, 7, 9 What is the variance for the number of pullups?    

A researcher was interested in comparing 3 group conditions: Meditation, Progressive Relaxation, and a Control condition on heart rate. 28 freshmen undergraduates from USF were randomly selected.  From these 28 students, 13 were randomized to the Control Condition, 8 were randomly assigned to Meditation, and 7 were randomly assigned to Progressive Relaxation. What would be the degrees of freedom for: Between groups df = _____  

A researcher developed an intervention designed to increase the strength of adults 85 years or older.  The researcher randomly selected 6 older adults, pretested the adults to determine their pre-intervention strength, implemented the strength training program for 10 weeks (1 training session/week), and then posttested them immediately following the last intervention session.  Higher scores represent greater strength. If the researcher calculated a t-ratio of 2.62 (p=.024) and used a .05 level of significance, what conclusion should the researcher make?

What effect will increasing the sample size have on the width of the confidence band around the estimated parameter?