Research Flashcards
Correlation
Association NOT Cause
Correlation #s
-1 to 0 to +1
0 is no correlation
+1 or -1 are perfect
Positive Correlation
Study more, grade goes up
Negative Correlation
More you brush your teeth, less you will have cavities
Bubbles
Flaws, like in a sticker
True Experiment
2 or more groups and random sample
Systematic Sampling
Every 9th or so person taken
Quasi
Cannot control the IV
+ external validity
- internal validity
Independent Variable IV
Experimental Variable
Manipulate
I manipulate the variable.
Dependent Variable DV
Control Group
I like dependency and control.
Expresses the outcome.
Null Hypothesis
All experiments have one
Means no correlation
Experimental or Alternative Hypothesis
Is there a significant difference?
Type 1 Alpha Error
Rejects the Null that is true
Rejection is the #1 thing you shouldn’t do to a person!
Type 2 Beta Error
Accepts Null when it should have been rejected
Significance Level for Social Sciences
.05 or less
.01 or .001
N=1
Single Subject Design - Case Study
Confound Experiment
Research inaccurate
Demand characteristics
Cue
Can confound an experiment