Some of the most widely used methods of psychology are listed below: (I) Observation—Introspection (self-observation t and objective observation (ii) Experimental method (iii) Interview (iv) Case study method (V) Questionnaire (vi) Cross—sectional method (vii) Longitudinal method (viii) Sequential method and (ix) Survey method. Let us briefly describe the above methods one by one. Observation—Introspection (Self- observation) and Objective Observation Observation is a basic method of scientific study employed Lw all sciences. For this reason, i is generally remarked —’a science begins and also ends with observation’ ‘Observation’ means ‘to look’ or ‘to view’. One may view or observe an event either directly or through sophisticated equipment/instruments. Direct observation is referred le unaided observation while observing by using instruments is called aided observation In psychology, we use both kinds of observation—’aided and unaided’. Aided observati...