Controls in research Flashcards
Extrensous/confounding cariable, situational/participant, + more terms (11 cards)
What is opertationlisation of variables?
Being specific or precise with your variables.
Making them quantifiable/objective and measurable.
Psychologists are scientists and we need to clearly define variables in terms of how they can be measured.
What is extraneous variables?
any variable (other than the IV) that may have an effect of the DV if it is not controlled. They are nuisance variables.
What is a confounding variable?
an extraneous variable that affected the results of the study so that the effect of the IV is not truly being seen. A good example of this would be a person’s personality. DIFFICULT TO CONTROL.
Difference between extraneous and counfding variables?
Confoudining harder to control!
if extraenous not controled it becomes confoduning..
What is a situational variable?
An extraneous variable present in environment of the study which effects participant performance
e.g. Noise, light, distractions, smells etc..
What is a participant variable?
Extraneous variables specific to the participants of an investigation that effects their performance
e.g. mood, ability, personality, intelligence, life experiences, upbringing etc
What is standardisation?
Standardisation is a common way of controlling extraneous variables in psychological experiments and other research.
For example, they may use standardised instructions or keep timings the same.
What is researcher/experimenter effect?
When psycholgist unconsciously/consciously gives hints about the experiment.
Can give cues (raise voice, lean in)
What are demand charactersitics?
Pariticpants may look for clues to see how they should act in an experiment..
may alter their behaviour if they find out aim.
What is single blind design?
when participant not aware of the aims or which condition they r in.
what is double blind design?
Both person doing experiment and pariticpant are blind to aims/conditions.
