Describe the difference between a population and a sample.

What will be an ideal response?

A sample is the set of people who were selected from the population in an attempt to represent the whole population without having to involve the whole population, which is likely impossible to do. How well the sample represents the population of interest is a function of the sample size, the way in which the sample was chosen, how many people chosen actually chose to participate, and a few other factors that researchers must consider when conducting any type of research study.

Psychology

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Schachter and Singer's participants who received epinephrine injections reported euphoria in a happy situation and anger in an insulting situation. Why were the results difficult to interpret? a. Later research failed to replicate the results

b. Most participants guessed what the experiment was trying to show. c. The instructions about expected side effects of the injection had no effect. d. Placebo injections produced the same results as epinephrine.

Psychology

Which of the following statements regarding marital satisfaction is FALSE?

a. The more children couples have, the lower their level of marital satisfaction. b. Parents exhibit lower marital satisfaction than non-parents. c. Parents of adolescents exhibit lower marital satisfaction than parents of infants. d. Mothers of infants exhibit the largest decrease in marital satisfaction.

Psychology