Longitudinal / Snapshot

Nota:

• a study carried out over a long period of time and usually looks at the development of a person and their behavouir

1. strengths
   1. useful

      Nota:

      • find out about life stages we all pass through - freud
      1. exam q

         Nota:

         • is useful where the results of a treatment or programme are followed through and compared to a control group. useful as no participant variables and development of specific individuals is recorded 
   2. qualitative data

      Nota:

      • reasons for behavouir and is rich and in depth
   3. less reductionist

      Nota:

      • look at number of differnt factors over a long period of time e.g. T&C
2. weaknesses
   1. high attrition rate
   2. expensive and time consuming
   3. qual

      Nota:

      • hard to analyse and subjective = down to interpretation

Nota:

• conducted on one occasion. looks at behavouir at one time, normally a large group and compares the data 

1. strengths
   1. quick
   2. cheap
   3. lots of data
   4. low attrition
   5. objective
   6. quantitaive
   7. exam q
      1. practical
      2. instant results
      3. repliacalbe
2. weakness'
   1. ethnocentric

      Nota:

      • often conducted in one area
   2. lack of qualitative data
   3. exam question
      1. invalid

         Nota:

         • of results to reflect behavouir over time 
      2. no understanding of changes over time
3. exam q

   Nota:

   • explain what is meant by a snapshot study. quick and do not involve repition of the measurement, do not take into account changes of behavouir over time