Research Methods Flashcards
experimental research
it is mandatory to manipulated the independent variables. Measures are repeated and independent
non experimental research
studies the variables are not manipulated. Measures are descriptive and observational
scientific research
is a systematic way of analysing and interpreting new or existing material through experimentation and observation
non scientific research
is based upon investigation of natural phenomenon using generalisations and without systematic means of investigation
6 ethical considerations
1- Voluntary participation 2- Withdrawal rights 3- Debriefing 4- Confidentiality 5- Deception 6- Debriefing
Population
is the entire group of people belonging to a particular category
Sample
a group of participants selected form and presentative of a population
a convenience sampling
quick and easy way of selecting participants based on the researchers accessibility to them
random sampling
employs a carefully planned and systematic method of selecting participants for a study
stratified sampling
involves breaking the population into strata or groups based on characteristics they share
validity
refers to the extent the which an assessment tool actually measures what it is designed to measure (internal and external)
reliability
refers to the extent to which an assessment tool measures what it supposed to measure what it supposed to measure each time it is used
placebo affect
is a fake or false treatment used to eliminate the placebo effect
experimenter affect
an extraneous variable caused when there is an unintentional change in a participants behaviour and hence results due to the experimenter influence
self fuflling prophecy
process by which ones expectations about another person eventually lead the other person to behave in ways the confirm these expectations
experimental methods
- labortory
- feild
- natural/quasi
non experimental methods
- naturalistic
- controlled
- participant
case study
a idiographic method involving the in depth and detailed study of the individual or particular group
correlations
a method of data analysis which measures the realtionship between two or more variables to see if a trend or systematic pattern exists between them.
diffferent non experimental methods
- case study
- correlations
- interviews
- questionnaires
interviews
involve direct verbal questioning of the subject by the researcher but differ in how strucured the questions are
questionnaire
are written methods of gaining data from subjects that do not necessarily require the presence of a researcher
different experimental design
- repeated measures
- independant measures
- matched pairs
repeated measures
involves using the same subjects in each condition of an experiment
independant measures
involves using different subjects in each condition of the experiment
matched pairs
involves using different but similar subject in eahc condition of an experiment
extranous vairables
- indiviudal differences
- artifiacialty
- order effects
- demand characteristics
- experimenter expectancy
- distraction and confusion