Laboratory studies evaluation

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  • Laboratory studies evaluation
    • Strengths
      • Participants can produce qualitative data by reporting how a drug makes them feel. This cannot be measured by quantitative methods
      • The well- controlled environment means that drug quantities and measurable effects can be seen to be objective and reliable
      • Data collected in lab studies on Humans given a much clearer idea of the effect of drugs on human performance compared with animal studies
      • Lab studies are the best way to systematically investigate the effects of a drug, as all other factors are held constant
      • Studies using drug addicts have allowed better understanding of the mechanisms of dependence, tolerance and withdrawal, as mechanisms may be different in other species and field studies have too many uncontrolled variables
    • Weaknesses
      • What one participant means by a description may not be the same as someone else means, so it is impossible to know if qualitative data is reliable
      • A lab is a very different environment from a social situation so the experiences are very different, causing validity to be reduces
      • In the past some lab studies have laid participants open to addiction, which is why people who are already addicted are used in modern research.
      • It is possible that the response of an addiction to a drug may be very different from those of a non-drug user, so generalisation may be invalid


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