The most common route of administration in lethal heroin overdose is

What was one of the reasons why the categorical model remained the official approach to personality disorder diagnosis as opposed to implementing the dimensional model?

a. There are not adequate data to support the switch. b. There is nothing wrong with the categorical approach. c. The dimensional model has been found to be inaccurate. d. There is no support for the dimensional model.

For the most part, preschool children teach themselves motor skills or learn them from other children

Indicate whether this statement is true or false.