第 14 个问题Why would a researcher use a quasi-experimental design rather than an experimental design?1 分When the independent variable is easily confoundedWhen manipulation of the variable is possible and ethicalTo collect data in the real world where controls are difficultTo randomly assign participants

第 10 个问题Quasi-experiments cannot make causal claims because1 分all confounding variables are eliminated or controlled for.the dependent variables are random. there is no random assignment. the variables are manipulated.

第 6 个问题Why is random assignment critical in an experimental research design? 1 分It makes the study reliable and valid.It provides evidence that there is a relationship between the measured variables.It ensures that the groups are equal prior to manipulating the independent variable.It allows the results to generalize to the population of interest.

Why do researchers need to be cautious in experimental research?a.because artificial settings may alter the behavior of the participantsb.because situation and variables are manipulatedc.because it may be unethical to do experimentsd.because it is dangerous to do experiments

another example of Experimental and nonexperimental research designs

Research in which attempts are made to establish causality by drawing on naturally existing variations rather than active manipulation of the independent variable would most typically use a____________ design. A. true experimental B. developmental C. quasi-experimental D. non-experimental