vaildity and reliability

Question 1

validity

Answer 1

refers to the extent to which the procedures used for a research study measure what it intended measure.
measured by a continuum not “vaild or not vaild”

Question 2

types of validity

Answer 2

internal validity
external validity

Question 3

internal validity

Answer 3

the extent to which the results are actually due to the IV rather than some other factor
“Does the data collection method actually measure the DV”

Question 4

external validity

Answer 4

the extent of which the results can be generalised to the population
“ does the sample represent the population”
- good when there is various partipants

Question 5

repeatability vs reproducibility

Answer 5

both indicate reliability
- repeatability: the degree to which a specific research investigation obtains similar results when it is conducted again under the same conditions
- reproducibility: how close the results to each other when an investigation is replicated under changed conditions

Question 6

reliability

Answer 6

refers to the extent to WHCIH RESULTS OBTAINED FROM A RESEARCH STUDY ARE:
-CONSISTENT
-DEPENDABLE
- STABLE
- important for the study to repeat

Question 7

what increases reliability

Answer 7

When the study is replicated (repeated) and the results are similar to another experiment completed with the same conditions
Using a large sample
Completing an adequate number of trials

Question 8

what decreases reliability

Answer 8

Using human judgement to record participants’ responses
Small sample size
Completing an inadequate number of trials
Presence of confounding variables