What is an experiment? The Experimental Method in Psychology

The video explains the concept of experiments in psychology, highlighting the importance of independent and dependent variables. It uses examples like the light switch experiment and classic studies by Solomon Asch and Peterson and Peterson to illustrate how experiments can establish causal relationships. The video emphasizes the need for standardized procedures to ensure replicability and discusses controlling extraneous variables to maintain the integrity of experimental results. It concludes with a call to action for viewers to subscribe to the channel.

What is the main purpose of an experiment in psychology?

• To observe natural behaviors

• To establish causal relationships

• To collect qualitative data

• To conduct surveys

In the light switch example, what is the independent variable?

• The brightness of the room

• The time of day

• The status of the light switch

• The color of the light

What was the independent variable in Solomon Asch's line comparison study?

• The length of the lines

• The behavior of the stooges

• The number of participants

• The type of lines used

In the Peterson and Peterson study, what was manipulated to test short-term memory?

• The type of syllables

• The retention interval

• The number of participants

• The complexity of the task

Why is a standardized procedure important in experiments?

• To ensure results are unique

• To make experiments more complex

• To increase participant numbers

• To allow for replication

What is an extraneous variable?

• A variable that is kept constant

• A variable that is measured directly

• A variable that might unintentionally affect the dependent variable

• A variable that is intentionally changed

Which of the following could be an extraneous variable in an experiment?

• The main hypothesis

• The time of day the experiment is conducted

• The independent variable

• The number of researchers