AP PSYCHOLOGY

Detailed explanation-1: -Questionnaires provide a relatively cheap, quick and efficient way of obtaining large amounts of information from a large sample of people. Data can be collected relatively quickly because the researcher would not need to be present when the questionnaires were completed.

Detailed explanation-2: -Survey research, on the other hand, allows researchers to easily collect data from relatively large samples.

Detailed explanation-3: -Since most research involves the collection of data, there are several methods for direct, or primary, data collection, including surveys, questionnaires, direct observations, and focus groups.

Detailed explanation-4: -A case study is an in-depth study of a particular research problem rather than a sweeping statistical survey or comprehensive comparative inquiry.

Detailed explanation-5: -Content analysis is a research tool used to determine the presence of certain words, themes, or concepts within some given qualitative data (i.e. text).