Task9 Chapter 11 Flashcards
What are quasi experimental designs?
Resemble experimental designs but they use quasi independent variables
What are time series design?
Explain in class
Interrupted time series design
Your chart changes in behaviour as a fact of some naturally occurring event rather than manipulate an independent variable
The naturally occurring event is a queasi independent variable d
What’s is the basis data for time series studies?
- You may be able to use archival data to investigate the possible causal relationships among variables
- You are not delimited to archival data only
What is the equivalent time samples design?
In this desfilan, the treatment is administered repeatedly
The treatment is introduced and the observations are made
Observations are made without the treatment
What are the advantages of using quasi experiment designs?
Allows you to evaluate the impact of a quasi independent variable under naturally occurring conditions
May be able to establish clear causal relationships among variables
What are the disadvantages of using quasi experimental designs?
You don’t have control over the variables influencing Behaviour
When you’re using naturally occurring events as if you have no control on when the event will occur
Confounding variables could cloud any causal inferences drawn from the data collected
What is no. Equivalent control group design?
Include a time series component along with a control group that is not exposed to the treatment
What is the essence of a non equivalent group design?
That a comparable group of subjects is chosen and observed for the same period as the group for which the treatment is introduced
Advantages of non equivalent control group design
Allows you to make comparisons you may otherwise not be able to make
Disadvantages if no equivalent control group design?
The validity of the design will be compromised if the two groups differ on some important variable before the study begins
If either group is selected for extreme scores on the pretest, then any shift of scores from pretest to post test toward the less extreme values may be use to regression towards the mean rather than to effect of your treatment
What is a pretest-protest design?
Design that includes a pretest of participants on a dependent measure before the intro of a treatment ñ, followed by a post test after the introduction of the treatment
How is pretest pottest design related to standard-within subjects design
Is mono-group and all subjects go through the same conditions
What are pretest-pottest designs used for?
To evaluate the effects of some change in the environment on subsequent performance
Subsequent: occurring or coming later or after
Following in order or succession
To test the effects on experimental manipulation on Behaviour
The Solomon four group design
A remedy to the pretest sensitization problem
You can determine whether the pretest alters the effect of your treatment
