aims hypothesis and variables

Define aim

A statement of what the researcher intends to investigate

Define hypothesis

A testable statement

What are the 3 types of hypothesis

Directional, non directional and null.

How can you describe a directional hypothesis?

States the direction of the outcome.

How could you describe a non directional hypothesis

Stating that there will be difference, however do not state the outcome.

How could you describe a null hypothesis?

stating that there will be no difference between variables

What are the three kinds of variable?

Independent, dependant and extraneous

Define independent variable

Variable that the researcher manipulates

Define dependant variable

Variable that researcher measures

Define extraneous variables

Any variable other than the iv which could have an effect on the dev

What are the 5 kinds of extraneous variable?

Situational (noise), participant (intelligence), experiment (experimenter bias), demand characteristics (guessing the motivation of an experiment) and social desirability (alter behaviour for experiment)

Define “operationalising” a variable

To make it measurable (e.g numerically)