idiographic and nomothetic

• idiographic approach: rich and detailed information collected is a more valid perspective on human behaviour while unusual cases are not generalisable. Due to depth and detail, idiographic research can be a time consuming process, researcher losing objectively
• nomothetic approach: data is easier to replicate, gather precisely and analyse using statistics, enabling generalisation of findings and prediction of future behaviour. subjective bias is reduced through standardised methods and objective measurements. However, trends may not accurately, represent every individual in a group. fixed criteria used as measurements do not give a complete picture of the individual