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Basic research terms
Research Design
Confounding & Extraneous Variables
Reliability and Validity
100
independent variable
What is the variable that is manipulated in an experimental study.
100
________is the degree to which changes in the dependent variable across treatment conditions were due to the independent variable
Internal validity
100
An experiment is ________ when the value ?of an_______ variable systematically changes along with the independent variable.
Confounded, extraneous
100

A measure is _____ if it is consistent.

Reliable

200
Dependent variable
What is variable that is influenced by the independent variable.
200
A research design that examines how two or more variables relate to each other.
What is a correlational design?
200
Name four types of extraneous variables.
Physical, Personality, Context, Social
200

______ refers to a measurement procedure must accurately capture the variable that it is supposed to measure.

Validity

300
Eye color, gender, ethnicity, are examples of what scale of measurement?
Nominal, categorical variable
300
These are two crucial characteristics of a true experiment.
What are random assignment to group and manipulation of the independent variable (treatment(s) and control group).
300
The Rosenthal Effect and Experimenter bias can present a threat to internal validity in a true experiment. How can we control for its potentially confounding effect?
Double-Blind Experiment
300

Define internal validity

Internal validity is the degree to which changes in the dependent variable across treatment conditions were due to the independent variable.

400
Name and define three (3) types of reliability
Test-retest, interrater, and interitem
400
Tasha is conducting a study assessing the impact of video gaming on aggression. She asks 30 participants what type of game they play? She found that subjects played either Role playing games, First person shooters, or Puzzle games. She then compared aggression scores across these categories to a comparison group of Non-gamers. What type of research design is this?
Quasi-experimental
400
Balancing, Elimination, and constancy of conditions are all methods for controlling_______ ________variables
Physical extraneous variables
400

Name Three types of reliability

Interrater reliability

Test-retest reliability

Interitem reliability

500
An ________definition specifies the exact meaning of a variable in an experiment by defining it in terms of observable operations, procedures, and measurements. The two types are:________and ________
operational experimental and measured
500
Name and describe two threats to internal validity.
history, maturation, instrumentation, selection, subject mortality, testing, and statistical regression.
500
Dr. Jones allows participants to choose which study they would like to participate in. She risks having a ________ extraneous variable effect her________validity
Context, external
500

A research study is conducted to determine if Zoloft decreases depressive symptoms. The study places participants in two groups, one group receives a placebo and the other group receives 75 mg of Zoloft. What are the independent and dependent variables?

Dependent- amount of depressive symptoms. Independent- medication (Zoloft and placebo)