Louis has never recovered from the death of his wife 15 years ago. This sort of pathological mourning process is labeled as:

When the assignment of research participants to groups is truly random, :

a. each participant has an equal probability of being assigned to the control group or the treatment group b. neither the researcher nor the participants know which group the participants are in c. participants are assigned to groups by last name d. participants are not assigned to groups

A person's vocabulary, cultural information stored in long-term memory, and logical reasoning abilities are known as what type of intelligence?

a. Fluid intelligence b. Crystallized intelligence c. Performance intelligence d. Analytical intelligence