definitions #1 (single/double blind)

what is the experimenter effect?

Influence that a researcher's expectations or behaviors can have on the participants and the results of an experiment.

What are demand characteristics?

Participants may modify their behavior or responses based on their perception of what the researcher is looking for.

list some ways to control extraneous and confounding variables

* random allocation of participants
* single-blind procedures
* standardisation of procedures and instructions

What is the random allocation of participants?

A method used to ensure that each participant has an equal chance of being assigned to each group or condition in the study.

What are single blind procedures?

The participants are not told which group or condition they are in, but the researcher is aware of this information.

What is the standardization of procedures and instructions?

Ensuring that all participants in a research study receive the same instructions and experience the same procedures.

What is a confounding variable?

A variable that effects both the independent and dependent variable.

What is an extrenuous variable?

a variable that effects only the dependent variable