Which theorist developed a model of the interactive contexts in which children develop?

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

The drugs categorized as benzodiazepines differ primarily with respect to their

a. recommended clinical uses b. duration of effects c. intensity of effects d. all of these