research methods - 2 Flashcards
(203 cards)
order effects
variables such as fatigue or practice effects, which affect the study if things are done in the same order
participants may become bored/tired of the study or may have done the same activity multiple times and may improve or discover the aim which will affect the findings
randomisation
making as many things within the research design and procedure as random as possible to reduce investigator effects/biases.
demand characteristics
participants not behaving naturally
instead they behave according to or against the aim
standardised procedure
a procedure that is carried out in a set way that is the same for everybody
e.g. every participant looks at the list of words for a minute.
participant variables
they are related to individual characteristics of each participant that may have an impact
e.g. mood, anxiety, awareness
what is meant by operationalising?
the process of making something measurable.
dependent variable
the variable you are measuring
double blind experiment
when the experimenter does not know the aims of the experiment and therefore can’t have any influence
situational variables
something to do with what is happening
e.g. time of day experiment is done
independent variable
the variable you change/manipulate.
extraneous variables
variables in the environment that have the potential to affect the findings of your study
e.g. noise in room
experimenter effects
when the experimenter being present affects the findings of the study
e.g. the tone of voice when giving instructions may indicate the answers needed
subjectivity
when analysing data that involves words there can be interpretation bias as you have to interpret what is being said in the data, which will be different for everyone.
what is meant by experimental design and what are the three types?
the allocation of participants for your study, whether you have one or more groups
1) repeated measures
2) independent groups
3) matched pairs design
repeated measures design
there is one group doing all conditions
independent groups design?
there are two separate groups in different experimental conditions.
matched pairs design?
there are two groups, but the groups are matched for something similar
e.g. age, personality
standard deviation
how close the scores are around the mean.
what does a small standard deviation show?
scores are clustered closely around the mean.
what does a large standard deviation show?
scores are spread out.
what is a sample?
who the participants are for the study.
e.g. age, race, background
what is meant by a research method?
the main way the data is collected in a study, such as using an experiment, a case study or a questionnaire.
predictive validity
to which the measure being used will allow you to predict future behaviours that this measure should be able to predict
e.g. when a student has good GCSE grades, we can predict that they will achieve good A-level grades.
what is meant by good predictive validity?
the data collected can be used to predict future behaviours.