Dallas is a 10-year-old boy who has a mental age of 8 years. His IQ would be:

Identify two reasons why girls' self-esteem tends to be more vulnerable than boys' self-esteem during the period of adolescence

What will be an ideal response?

A researcher selects a sample of 65-year-olds and interviews and tests them every two years for 14 years. Over these years, some of the subjects die or drop out of the study. This phenomenon is referred to as _______

a. attrition b. terminal drop c. longitudinal loss d. selective bias