Methods for recording subjective drug effects

For reasons of expediency and objectivity, and particularly in the case of more extensive studies, questions are preferably submitted in writing, i.e. in some form of self-rating scale. Here one can distinguish between symptom checklists, adjective checklists, semantic differentials and visual analog scales. 

Symptom checklists are often formulated as alternatives, Le. the subject is asked whether or not he is experiencing a symptom, e.g. headache, at a given point in time. The list of symptoms presented to subjects can either be compiled on the basis of previous knowledge of the substances being tested, or a standardized list can be used. Symptom checklists may also be formulated in 

The words below can be used to descnbe an individual s mood Please rate yourself according to what you are feeling at this moment, using the extreme terms given and placing a cross in the appropriate box. [g 

Should you wish to provide additional information on your condition, please do so here. 

Adjectne checUt.vts can be formulated as alternatives or in grades, hi both cases the subjects seek to descnbe their current subjective state by means of 

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