experimnetal method- research methods

Question 1

aims

Answer 1

developed from theories
general statements that describe the purpose of investigation

Question 2

hypotheses

Answer 2

statement that is made at the start of a study and describes the relationship between variables as stated by the theory
can be directional or non directional
directional-researcher makes clear the sort of difference that is anticipated between two conditions or two groups
non directional-simply states theres a difference between conditions or groups, the nature of difference is not specified

Question 3

deciding which hypothesis to use

Answer 3

directional-when theory or findings of previous studies suggest aparticular outcome,
non directional- no theory or previous research

Question 4

independent and dependent variables

Answer 4

iv-changes or manipulates
dv-records or measures change
all other variables that might affect dv should remain constant so researcher can be confident any change in dv was due to iv

Question 5

levels of iv

Answer 5

different experimental conditions

Question 6

operationalisation of variables

Answer 6

ensure variables investigated are as measurable as possible