Reasoning is a highly purposeful, controlled, selective thinking process.Learning usually results from the process of the reasoning. Broadly speaking dull childfails in two ways- first from inability to combine the relations and related data into asystematic whole, secondly from inability to sustain the direct idea that should guide theevolution of his appreciative process. Learning usually results from the process of thereasoning. The reasoning ability develops gradually. In reasoning, we try to explorementally the reason or cause of an event or happening. The attempts to find the solutionsof the questions like “why is it so? How does it happen?” Is nothing but application ofour reasoning ability to find the cause and effect relationship. Not only, we are engagedin finding the cause but we are also interested to know the possible effects of actions andstimuli. In thinking what will happen if this or that is done. One is able to make use ofone's reasoning ability. In this way reasoning has a unique advantage that it helps us toassure at certain conclusions concerning the problem without actually engaged in anymotor exploration. The investigator selected this topic in order to assess whetherreasoning ability depends on the academic achievement and sex. Further the variablesof sex and academic achievement are dependent of each other, when reasoning ability istaken as the dependent variable is also measured.