Book 1/4 P2 Flashcards
(38 cards)
Falsifiability
The principle that a theory cannot be considered scientific unless it admits the possibility of being false
Inductive reasoning
Starts with an observation, ends in drawing a conclusion of theory
Deductive reasoning
Starts with an existing theory and ends in an experiment to confirm or deny theory
Empiricism
An empirical method collects data from direct experiences
Aim
What you are trying to achieve
Hypothesis
Specific prediction of what you will find
Null hypothesis
A hypothesis which predicts no significant effect or relationship between variables
Directional (one-tailed) hypothesis
A hypothesis which specifies a direction (..WILL BE..)
Non-directional (two tailed) hypothesis
A hypothesis which doesn’t specify the direction of the difference or relationship
Operationalisation
Making the variables more specific (IV- groups, DV- measure)
Objective
Research which is based on facts
Subjective
research based on peoples personal feelings and opinions (not on facts)
Meta analysis
A research method which uses secondary data and summarises it
Generalisability
The extent to which findings from an investigation can be applied to the population
Pilot study
A small scale trial investigation that tests some or all aspects of the experiment
Extraneous variables
any variable that you’re not investigating that can affect the outcome of your results
Participant variables
The individual characteristics of each participant that could affect study results (e.g. mood, intelligence)
Demand characteristics
Cues that might indicate study aims to participants
Social desirability bias
Participants give answers to questions that they believe will make them look good to others
Researcher variables/ investigator effects
When a researcher intentionally influences the outcome of the study
Single blind procedure
Participants are not informed about aims or hypotheses of the study
Double blind procedure
Both the participants and the researchers are unaware of the specific aims or conditions of the study
Reliability
The consistency of the results (if the results remain similar over multiple attempts the research will consider it reliable)
Inter-observer reliability
measures the degree of agreement between different people observing or assessing the same thing