Blog

True or False? It was not until the 19th century that the mentally ill were treated with sensitivity. This ‘moral treatment’ approach was used in Europe earlier with success. Mental health patients in hospitals were treated while participating in work and educational activities.

True or False? National health insurance, as in Canada, is funded by the government through general taxes although the delivery of care is by private providers. Countries with national health care programs provide universal access to health care to all citizens.

A study finds a correlation coefficient of r = .52. According to Cohen’s benchmarks, the magnitude of this effect is:

Iron’s main role in the body involves its ability to carry

Why are double-barreled questions problematic?

Lauren examined the relationship between conscientiousness and GPA and found a correlation of r = .24. This correlation is more likely to be statistically significant if:

Zinc absorption is inhibited by

Scenario: You pick up a newspaper and read the headline: “Higher income is linked to greater marital satisfaction!” You tell your friend about the study you read and she responds: “I’m curious as to whether there is a causal link between the two variables, such that having a higher income causes higher levels of satisfaction. I know we can’t manipulate income level, but I wonder if we could use a multivariate design to see whether this relationship still holds after controlling for participant life satisfaction?” Question: Provide a recommendation to your friend to address her question about whether the relationship holds after controlling for life satisfaction. Include the following details: 1. Discuss the type of multivariate design you recommend and why. 2. Discuss which of the 3 criteria for causality the multivariate design you chose helps to address. 3. Discuss how you would conduct a study to determine whether the relationship holds after controlling for life satisfaction. 4. Identify the predictor(s) and criterion variable(s) in your study.

What is the difference between concurrent-measures designs and repeated-measures designs?

Imagine you calculated the correlation coefficient for the data presented in the figure below, and the result was r = –.44. Looking at the figure, how would you know the number you calculated is incorrect?