Assume that you are alone in a room with a child suffering from a disorder. If you didn’t know what the child’s diagnosis was, what behavior of the child’s might start to convince you that the disorder is autism spectrum disorder?

Which factor is most critical for establishing strong internal validity in experimental research compared to quasi-experimental research?

Dr. Alvarez is studying the effects of cannabidiol (CBD) on pain sensitivity. She recruits 40 patients with chronic pain and wants to assign half of them to receive CBD and half to receive placebo before completing a pain sensitivity test. However, Dr. Alvarez lets patients choose whether they want CBD or placebo, rather than randomly assigning them. Which threat to internal validity would this introduce?

RESEARCH STUDY 12.2 Dr. Elder was interested in the way people recognize objects as members of categories. For example, what makes us recognize a dog as being a dog and not a cat? More specifically, he was curious as to whether people think about categories in a more complex way if they contemplate an “opposite” category first. For example, does a person think more differently about the category of “southern” if they are also thinking about the category of “northern”? He is also curious as to whether people categorize differently if they are exposed to category members compared with generating category members. Dr. Elder has four groups of participants (with 30 people in each group). In Group A, participants were told to cut out pictures of dogs and cats from magazines. In Group B, participants were told to cut out pictures of just dogs from magazines. In Group C, participants were told to draw pictures of cats and dogs. In Group D, participants were told to draw pictures of just dogs. After doing this for 30 minutes, participants in all groups were asked to list the attributes that define the “dog” category. Having a higher number of attributes listed was considered to be an indication of thinking about the category in a more complex way. Dr. Elder also is curious as to whether categorization happens similarly for children as it does for adults. As such, he recruits a group of 10-year-olds and a group of 20-year-olds to participate in the study. The results are below: Refer to Research Study 12.2 to answer the following four questions. In the study described above, how many independent variables are there?

A 65-year-old in otherwise very good health typically will experience occasional:

Assume that you are alone in a room with a child suffering from a disorder. If you didn’t know what the child’s diagnosis was, what behavior of the child’s might start to convince you that the disorder is autism spectrum disorder?

Stealing, lying, and cheating are examples of

What does it mean to say that intelligence tests are culturally biased?

________ is a neurodegenerative disorder, characterized by progressive and gradual cognitive deficits due to severe cerebral atrophy.

“Relational aggression” is a term used to describe a pattern of aggression MOST common among: