Investigation Design

indepandant variable- the variable manipulated or controlled by the experimentor

dependant variable- the variable measured to show the effect on the independant variable this is always the outcome

directional hypothesis-when a researcher is confident of the outcome

nondirectional hypothesis- when the reacher will mealry state there will be a difference

null hypothesis- the prediction there will be no difference by the reasercher

operationalisation-researcher defines exactly what behaviour is going to be manipulated and exactly how the variables will be measured and the type of data generated

nominal data- the frequency something occurs in its own seperate category for example how many boys and how many girls are in each class

ordinal data- the data that can be placed into rank order for example using a rating scale such as a likert scale 1=low 10=high so you can ask someone to list there top 10…