Decision-making can be defined as problem-solving activity terminated by a solution deemed to be satisfactory. It is therefore a process which can be rational or irrational and can be based on explicit knowledge or tacit knowledge. The decision-making process is regarded as a continuous process integrated in the interaction with the environment. The in hand research was conducted to re-confirm and re-establish the concurrent validity of the numerical value of Decision Making Ability as assessed through the standardized Cognitive Ability Test. The research was conducted in and around Chandigarh. The sample consisted of 240 school going students between 7-16 years of age from different schools. Random sampling was followed. The sample was divided into 4 groups according to their age. The Decision making ability of all the subjects were found in two different stages, using two varied tests, both of which are developed and standardized scientifically. It was established through results that the Cognitive Ability Test is valid measure to recordt the Decision Making Ability of the respondents.
