Validity

Question 1

What is Internal Validity?

Answer 1

Whether the outcomes observed in an experiment are due to the manipulation of the IV and not other factord

Question 2

How can Internal Validity be influenced?

Answer 2

Confounding and Extraneous variables
Ppts variables and DC
Investigator bias

Question 3

What is External Validity?

Answer 3

If the findings are generalisable to to other settings, populations and eras

Question 4

What is Ecological Validity?

Answer 4

The extent to which findings can be generalised to other settings

Question 5

What is Temporal Validity?

Answer 5

Generalisability to other eras

Question 6

What is Population Validity?

Answer 6

Generalisability to different populations of various ages, genders and cultures

Question 7

How can validity be assessed?

Answer 7

Face validity- appears to measure what it is supposed to
Concurrent validity-extent is compares to a similar existing measure
Predictive validity- how well it can predict future events

Question 8

How can Validity be improved in Experimental research?

Answer 8

Control group- if changes o DV due to IV
Standardised procedures
Single and double blind procedures

Question 9

How can validity be improved in Questionaires?

Answer 9

A lie scale to assess consistency and control SD
Assurance of anonymity

Question 10

How can validity be improved in Observations?

Answer 10

Minimal researcher intervention
Covert
Clear Behav Catergories

Question 11

How can validity be improved in Qualitative methods?

Answer 11

Triangulation-use of a number of different sources such as interviews with family to reduce interpretative bias