Key Scientific Skills/ Research Methods Flashcards
Accuracy
how close a measurement is to the true value
of the quantity being measure
Aim
a statement outlining the purpose of the study p. 3
Allocation
the process of assigning participants to conditions in the experiment for the research p. 19
Bar chart
a graph that depicts the relationship between two variables using rectangular bars p. 41
Beneficience
the commitment to maximising benefits
and minimising the risks and harms involved in taking a
particular position or course of action
Case study
an in-depth study of an individual or a group of individuals p. 10
Choosing an experimental research design
the process of choosing an appropriate experimental research design in order to reduce possible extraneous and confounding variables p. 24
Conclusion
a statement regarding the results of an investigation as to whether the hypothesis was supported or not p. 47
Confidentiality
the right of the participant for their personal details to remain private p. 31
Confounding variables
variables other than the independent variable that have directly and systematically had an effect on the dependent variable p. 23
Control group
a group that is used as a basis for comparison; participants are not exposed to the experimental conditions (the IV) p. 12
Controlled variable
variables other than the IV that a researcher holds constant (controls) in an investigation, to ensure that changes in the DV are solely due to changes in the IV
Convenience sampling
when a sample is selected using the quickest and easiest means possible, selecting people who are readily available from the population p. 18
Correlational study
a type of non-experimental study in which researchers observe and measure the relationship between two or more variables without any active control or manipulation of them
Counterbalancing
a method used in repeated-measures experimental designs to reduce order effects p. 24
Cross-sectional study
when data is collected from participants from different segments of the population (pre-existing cohorts) to represent a ?snapshot? in time p. 10
Debriefing
occurs at the conclusion of an experiment and involves the researcher outlining the nature of the experiment to participants and includes ensuring that participants do not leave the experiment with lasting harm p. 31
Deception
when the participant is unaware of the true nature of the experiment p. 31
Dependent variable (DV)
the variable that is being measured in an experiment for changes it experiences due to the independent variable p. 4
Descriptive statistics
statistics that are used to organise and summarise data p. 40
Demand characteristics
cues in an experiment that may signal to a participant the intention of the study and influence their behaviour
Double-blind procedure
a procedure in which both the participants and the person conducting the experiment are unaware of which condition participants have been allocated to, in order to reduce experimenter bias p. 25
Ethics committee
a group of people who review research proposals, consider the potential risks, benefits and implications in order to either approve or disapprove them for research p. 30
Controlled experiment
a type of investigation in which the causal relationship between two variables is tested in a controlled environment; more specifically, the effect of the independent variable on the dependent variable while aiming to control all other variables
Experimental group
the group within an experiment that are exposed to experimental conditions (the IV) p. 12
Experimenter effects
occur when an experimenter?s expectations about the study influence the results p. 25
External validity
the extent to which the results of an investigation can be applied to other settings, people and time p. 49
Fieldwork
any research involving observation and interaction with people and environments in real-world settings, conducted beyond the laboratory
Extraneous variables
variables other than the independent variable that may produce unwanted results in an experiment p. 23
Generalisability
the extent to which the results of an investigation can be applied to the wider research population p. 48
Hypothesis
a testable prediction about the outcome of an experiment; it is written in the form of a statement and includes the variables that will be tested p. 3
Between subjects design
(also known as independent design) an experimental design in which participants are split into two or more groups; typically a control group and an experimental groups p. 12
Independent variable (IV)
the variable that the experimenter manipulates in order to observe the effect it causes on the dependent variable p. 4