Question

Answer the following questions:

1) Which of the following research designs poses a threat to internal validity called selection?

a) one-shot case study

b) one-group pretest-post test

c) static-group comparison

d) one-group

2) This type of research is considered a descriptive methodology in which results of interviews, observations, or questionnaires reveal what is happening at a particular occurrence. It involves recording, describing, analyzing, and interpreting conditions that presently exist. Comparisons and contrasts are attempted to reveal relationships between the non-manipulated variables.

a) survey research

b) comparative and effectiveness research

c) evaluation research

d) experimental research

3) When a researcher attempts to identify a causal relationship between the independent and dependent variables, and also to control for alternative plausible explanations of the causal relationship, the researcher is attempting to improve the evidence for the ____________ validity of the study.

a) sampling

b) internal

c) external

d) experimental

Answer 1

1) The static group comparison poses a threat to internal validity called selection.

So answer is C.

2)The question describes a survey research.

So answer is A.

3)Answer is D, experimental validity of the test.