Chapter 8 - Introduction to Quantitative Research

Fidelity or uniformity over the tested variables. Measures used to hold uniform or constant the conditions under which an investigation occurs.

A variable that interferes with the operation of the phenomenon being studied

Similarity of conditions

The inferences that the data are representative of certain phenomena in a population beyond the studied sample

A distortion in the data analysis results

Methods and procedures of data collection are the same for all subjects

The group in an experimental investigation that does not receive an intervention it treatment. The comparison group

The interval validity that that refers to effects outside of the experimental setting that may affect the dependent variable

The antecedent or the variables that has tge presumed effect on the detergent variable

Changes in the measurement of the variables that may account fur changes in the obtained measurement

The degree to which it can be inferred that tge disintegration treatment rather than an unfiltered condition, resulted in the observed effects

A variable that occurs during an experimental or quasi experimental study that affects the dependent variable.

The process of enhancing the study's internal validity by ensuring that the intervention is delivered systematically to all subjects.

Developmental, biological, or psychological processess that operate within an individual as a function of time and are external to the events of the investigation.

Administration of a pretest in a study that affects the generalizability of the findings to other populations

The loss of subjects from time 1 data collection to time 2 data collection

A small simple study conducted as a prelude to a larger scale studythat is often called the parent study

A sampling selection procedure in which each person or element of the population has an equal and independent chance of being selected to either the experimental group or the control group

The distortion created when those who are being observed change their behavior because they know they are being observed

The generalizability of the results to other populations

The internal validity threat that arises when pretreatment differences between the experimental group and the control group are present

The effects of taking a pretest on the scores of a post test