LCSW Exam Prep: Practice Evaluation/Research Questions With Correct Answers(GRADED A+)

2 major purposes of research design - ANSWER1. to provide answers to research questions 2. to control variance, insuring that the results obtained are as closely related to what is being studied Maximincon Principal - ANSWERMAXimize the variance of the variables of the substantive research hypothesis (i.e., you want the experimental conditions to be as different as possible); to CONtrol extraneous variables (i.e., these are independent variables that are not necessicarily related to your study, (e.g., sex, race); and MINimize error variance (i.e., this is the fluctuation that may occur in your results due to random events). Variable - ANSWERany phenomena or characteristic that is free to vary with at least two conditions or levels (e.g., gender with both males and females is a variable; males alone would be a constant) Constant - ANSWERrestricted to a single state (e.g., gender is a constant if females only are used in a study-not both sexes) Independent Variable - ANSWERpresumed cause Dependent Variable - ANSWERpresumed effect and vary as related to the independent variable, usually the treatment being tested is the independent variable Hypothesis - ANSWERa proposition that is stated in a testable form Null Hypothesis - ANSWERreferred to as the hypothesis of "no difference," generally used in statistcal analysis to be disproved Random Sample - ANSWERbriefly stated, it is a planned process that utilizes probability theory to ensure that the sample will represent the population, in the random sample each subject in the population has an equal chance of being selected Generalizability - ANSWERthis is the true goal of all research, it is where you take what you know about a small group or sample of a population and apply it to explain the general population