The substage of intuitive thought lasts from the ages of ____

When researchers are interested in studying the relationship between variables that cannot be manipulated they are likely to use which of the following methods?

a. naturalistic observation b. correlational methods c. experimental methods d. case studies

Which of the following best describes the classification of social substance use?

a. trying a substance once or perhaps a few times out of curiosity and then not using it again b. the use of a substance during social activities with one or more friends c. using a substance to relieve an unpleasant emotional state such as sadness, anxiety, stress, or loneliness d. when a person has become dependent on regular use of the substance to feel good physically or psychologically