UNIT 1 SAC 2 Flashcards
controlled experiment
investigation methodology that aims to test the effectiveness of an IV on a DV with all other variables controlled
Variables
refers to anything that can change
dependent variable
being measured
IV
manipulated changed
research question
iv dv
what is the effect of….
Aim
clear and precise statement on the purpose of the study
quantative data
numerical data collected through systematic and controlled procedures to ensure that measurements are accurate.
qualative data
non-numerical. verbal descriptions
primary data
collected ourselves from a study we designed
secondary data
collected by someone else that we use when conducting a literature review in percentages and can easily compare data from this
extraneous varibales
pther than iv dv
unwanted
eg order effects, placebo effects, situational variables
confounding variables
variables other than the iv that is controlled
allowed to change together with the iv therefore unwanted effects on the dv
similarities of ex and confound variables
both cause problems
of ex and confound variables differences
condfound= cause measurable change in the dv
ex may or may not cause change in dv
controlled variable
held constant to ensude the only influence of dv is iv
types of ev
participant variable
characteristics of participants can influence dv eg race gender
types of ev
experimental variable
experimener expectations influence participants eg tone of voice
types of ev
placebo effects
participants expectations influence behaviour eg impact of sleeping tablet
types of ev
order effects
practice effect boredom effect eg alcohol in one situation would be different to if it was in another situation
