Exam 2 - Section 7 Flashcards
What is a True Experimental research design?
Manipulate one or more factors create different conditions or experiences; use random assignment of participants to groups
What is a Quasi-Experimental research design?
Manipulate one or more factors to create different conditions or experiences; use existing groups of participants without random assignment (random assignment is impractical or not fully achieved); could be more susceptible to threats of internal validity, particularly with Selection
What is a Nonequivalent Control Group?
Design incorporates pre-existing groups or “intact groups” and the group is then assigned to a condition/treatment
What are the Possible Concerns when it comes to a Nonequivalent Control Group?
Groups are inherently different from one another (they differ in a systematic way); participants within each group have not been randomly assigned to the established group
What is a Repeated Measures design?
One group of participants who experience all levels of a factor (within-subjects); that is, the comparison is between 2 or more conditions with the same group of participants (Quasi-Experimental Design - still manipulation of IV, but lacks randomization) (Often a Mixed Research Design)
How would you notate a Repeated Measures design?
X1 O X2 O X3 O
What are the Pros and Cons of a Repeated Measures design?
May be helpful to subject recruitment (don’t need as many participants); be wary of “order effect” - the sequence or order in which you have the conditions (use counterbalancing to minimize the order effect)
What is a Single Subject Design?
Experimental design for an individual participant (could be multiple participants who complete the protocol); participant experiences both control and treatment conditions - lacks randomization element
How do you notate a Single Subject Design?
A = baseline condition; B = first treatment; C = second treatment; A1 = first baseline in series; B1 = first treatment in series
Simple Time Series notation for Single Subject Design
A - B
Treatment Withdrawal notation for Single Subject Design
A1 - B - A2
Treatment Replication Design notation for Single Subject Design
A1 - B1 - A2 - B2
Multiple Baseline Designs for Single Subject Designs
Selecting 2 or more behaviors to observe/target; continuing tracking one group, only apply intervention to one group
