Provides a complete and global account of the individual
This is due to its use of in-depthqualitative methods of investigation
This complements the nomothetic approach as it sheds further light on general laws or even challenging these laws
For example, a single case may generate hypotheses for further study (like in the case of KF which helped investigate the understanding of different types of STM).
This increases the validity of the idiographic approach as it increases our understanding of individual human behaviour
IvsN AO3 - Restrictive (against I)
Ex. with Freud, one criticism is that some of his key concepts such as the Oedipus complex have been developed from one case study
Meaningful generalisations cannot be made without further examples - is no adequate baseline to compare behaviour with
Methods associated with the idiographic approach such as case studies tend to be the least scientific since they rely a lot on the interpretation of the researcher
This decreases the validity of the idiographic approach as it relies a lot on interpretation which is subjective and therefore not as scientific
IvsN AO3 - Scientific (for N)
Processes involved tend to be more scientific, such as the use of standardised conditions, using data sets that provide group averages and statistical analysis
These processes have allowed psychologists to establish norms of typical behaviour
Enables psychologists to easily establish norms/general laws which can be used for comparison and predictions
This increases the validity of the nomothetic approach since it has given the discipline of psychology greater scientific credibility so has implications in psychology and society
IvsN AO3 - Loss of meaning (against N)
Been accused of 'losing the whole person' within psychology
This means it may undervalue the impact of individual experiences and aspects as it ignores important subjective experiences
In addition the methods used can be criticised as lacking ecological validity and mundane realism as they may not accurately reflect real life behaviour so conclusions may lack validity
Nomothetic approach may ignore/overlook the richness of human experience
Ex. Behaviourist approach principle of stimulus-response generalised to everyone ignores emotions
IvsN AO3 - Combination approach
Behaviours and issues should be considered from both perspectives
Millon and Davis - suggest that research should start with a nomothetic approach and once general laws have been produced the focus should switch to an idiographic approach to develop understanding and theories
As well as trying to establish general patterns and theories of behaviour we must also consider individual case studies as these can enhance/develop theories