Research Design Flashcards
Experimental Research is divided in two categories:
True Experimental Design and Quasi-Experimental
True Experimental
The investigator randomly assign subjects to different groups, which receive different levels of a manipulated variable
Quasi-experimental
used when random assignment of subjects to groups is not possible
Correlational Design
variables are measured rather than manipulated
History
A film designed to increase the awareness of white college students is shown the day after a leading civil rights activist spoke at the college.
In a research study testing the effects of a new strategy for increasing short-term memory, subjects have to wait 3 hours in a room before the study begins. As a result, they become very tired and cannot concentrate on learning the strategy
Maturation
A drug design to improve emotional and psychosocial functioning is administered to severely depressed individuals
Statistical regression
Cues in the experimental setting that allow subjects to guess the research hypothesis
Demand characteristics
The effect that an experimenter expectancy has on the results of a research study
Rosenthal Effect
Hawthorne Effect
The tendency of subject’s behavior to change due to attention received in a research setting
Procedure designed to ensure that all subjects in a research study have an equal probability of ending up in each of the treatment groups
Random Assignment
A statistical method of controlling for the effects of an extraneous variable
ANCOVA
Stratified random sampling
A procedure that involves grouping subjects who are similar in terms of their status on an extraneous variable and then assigning the members of each group to different treatment groups
Matching
A procedure in which a population is divided into sub-populations and all members of each sub-population have an equal probability of being chosen to participate in the research study
Blocking
designed to determine the effects of the extraneous variable
True-experimental research
Involves manipulated variables and random assignment
Quasi-Experimetal Research
Involves manipulated variables and NON-random assignment
Correlational Research
A study assessing the association between SAT scores and college GPA. Does NOT have internal validity
Longitudinal design
A study of the effects of aging on IQ scores in which one group of subjects is examined for 30 years
Cross-sequential
A study on the effects of aging on psychosocial adjustment that involves comparing older, middle aged, and younger subjects at different points of times
Cross-sectional
A study on the effects of aging on psychosocial adjustment that involves comparing older, middle aged, and younger subjects at one point in time
AB Design
A single subject design that involves one baseline and one treatment phase
Reversal design
A single subject design in which the treatment is withdrawn to determine whether the DV score revert to baseline level
Multiple baseline design
A study of a single conduct-disturbed teen in which the effectiveness of a new behavior modification program is assessed first at school, then at home, and then in the community
Time-series design
A study that involves obtaining DV scores from a group of subjects on multiple occasions at regular intervals
Case study
An in depth study of a single individual, institution, group, or phenomenon
