Experimental Method

Question 1

experimental method

Answer 1

where the IV is manipulated to have an effect on the DV, which is measured by the researcher, to show a cause and effect relationship, all other variables are controlled for

Question 2

aim

Answer 2

general statement outlining the purpose of the study

Question 3

hypothesis

Answer 3

precise statement that states the relationship between the variables being investigated

Question 4

null hypothesis

Answer 4

states there is no significant difference between the variables being investigated

Question 5

alternative hypothesis

Answer 5

states there is a significant difference between variables being investigated
- directional (one-tailed)
- non-directional (two-tailed)

Question 6

directional (one-tailed) hypothesis

Answer 6

states the extent of significant difference between the variables being investigated
- chose when findings of previous research suggest a particular outcome
- ‘more’, ‘greater’, ‘lower’

Question 7

non-directional (two-tailed) hypothesis

Answer 7

states there is a significant difference between the variables being investigated, without mentioning the extent

Question 8

independent variable

Answer 8

manipulated by the researcher, to have an effect on the DV

Question 9

dependent variable

Answer 9

measured by the researcher, caused by a change in the IV