Data
Experiments
Threats to Internal Validity
Correlational Studies
Qualitative Research
100

This type of data is measured using numbers

Qualitative data

100

Experimenters manipulate variables to test a hypothesis and attempt to determine a ____________ relationship between variables. 

cause and effect

100

Participants in an experiment may change over time as they get older

maturation

100
The tendency for one variable to increase when the other variable increases

positive correlation

100

A method of watching behavior, either in a natural setting or in a lab

Observation

200

This is data that provides in-depth descriptions of a phenomenon 

Qualitative data

200

The group of individuals who participate in a study 

sample 

200

When the experimenter has preconceived ideas that unintentionally impact the data

Experimenter bias

200

The tendency for one variable to decrease when the other increases

negative correlation

200

A method of collecting qualitative data by asking participants questions

Interview

300

Data that is influenced by people's emotions, beliefs, and experiences is ____________. Data that is not influenced by people's emotions, beliefs, and experiences is _____________.

Subjective/Objective

300

The type of people the experiment data is intended to be generalized to 

target group

300

The outside events that happen to participants during the experiments that can impact the data

History

300

When the variables seem to have no impact on each other

Zero correlation

300

A method of collecting qualitative data by asking questions to a small group of participants

Focus Group

400

An __________ variable changes on its own (example: time). A __________ variable changes when the other variable changes. 

independent/dependent

400

The ____________ group is the group of participants who experience the change in variable. The __________ group is a group of participants who do not experience the change and are used for comparison. 

test/control

400

When the instrument used to measure the dependent variable changes between measurements. 

Instrumentation

400

The likelihood that a correlation is simply caused by chance

statistical significance 

400

An in-depth investigation of a specific person or group

Case Study

500

A characteristic that is not directly observable (ex: love, anger, friendship, etc) is called a ___________. In order to measure it, we must ________________ it by assigning observable behavior (ex: yelling can be used to measure anger) to the characteristic.

construct/operationalize 

500

The extent to which results of an experiment can be trusted to reflect reality.

credibiltiy

500

When participants behave in a way because it is what they think the experimenter expects

demand characteristics

500

Since we do not manipulate any variables in a correlational study, we infer a relationship but cannot infer ________________.

cause and effect.

500

Using a combination of different methods to collect and interpret data 

triangulation 

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