Research method that evaluates the relationship between two variables.
What is a correlational study?
100
A variable that is manipulated by a scientist in a research study.
What is an independent variable?
100
Participants will be exposed to only one level of the independent variable.
What is a between-subjects design?
100
The consistency with which observations or measurements are made. The measure is not expected to change over time.
What is reliability?
100
Rejecting the null hypothesis when it is true.
What is a Type 1 Error?
200
Research method where a people are observed in their natural setting
What is naturalistic observation?
200
A specific and quantitative definition that describes the dependent variable (what the scientist is measuring in an experiment).
What is an operational definition?
200
A research design in which participants are exposed to ALL levels of the independent variable.
What is a within-subjects design?
200
The accuracy of a measure to evaluate what it is supposed to measure. That is, you are measuring what you think you are measuring.
What is validity?
200
The amount of "spread" in the data.
What is variance?
300
A research method that is an in-depth observation of an individual, animal, event, or treatment method.
What is a case study?
300
A statement that predicts a cause and effect relationship between an independent and dependent variable.
What is a research hypothesis?
300
A research design that includes more than one independent variable.
What is factorial design?
300
A sampling technique that ensures bias (sources of variance) will be balanced among treatment groups.
What is random sampling?
300
A data point(s) that causes negative or positive skew in the overall distribution.
What is an outlier?
400
A method where one designs a questionnaire to obtain information regarding behaviors, attitudes or opinions.
What is survey research?
400
This effect occurs when all of the scores fall at the lower range of the response option.
What is a floor effect?
400
An effect where one independent variable has had an effect on the dependent variable while ignoring or collapsing across the other independent variables in a factorial research design.
What is a main effect?
400
An extraneous variable whose presence affects the variables being studied so that it is not clear what effect (if any) the independent variable had on the dependent variable.
What is a confounding variable?
400
A statistical test that is used to determine if two means are significantly different from one another?
What is an independent-samples t-test?
500
A method where you use existing records and select portions of the records to examine. These records are collected by other people and are usually of publicly available.
What is archival records research?
500
The four types of scales of measurement that can measure a dependent variable.
What are nominal, ordinal, interval and ratio?
500
An effect that occurs when the effect of one independent variable depends on the effect of another independent variable.
What is an interaction effect?
500
The influence of a participant's previous experience/exposures with some aspect of an experiment which will then influence their performance now or in the future.
What is a carryover effect?
500
A statistical test that is used when you have three or more levels of an independent variable and/or you have more than one independent variable.