Cognition and Emotion interact to determine ongoing behaviors. Our cognition, i.e. our perceptions, memories, interpretations are essential ingredients of emotions. So the process of emotion starts with cognition. Therefore, we can say that there is a role of cognition in emotion. Cognition: It is the activity of knowing the acquisition, organization, and use of knowledge. All our mental abilities - perceiving, remembering, and reasoning, are organized into a complex system, the overall functioning of which is termed as cognition. Emotion: It is defined as a strong mental or instinctive feeling such as love or fear involving many bodily processes, and mental states. An emotion combines cognition, bodily arousal, and behavior in a ready-made formula for responding in line with the way the situation has been interpreted. Important Points Effect of Cognition on Emotion- Cognition helps us to understand the perceptions, abilities, and emotions of individuals and has many implications for the teaching-learning process. If pressures due to stress continue, one may suffer from mental overload. This suffering from a high level of stress can rapidly cause individuals to lose their ability to make a sound decision. The cognitive effects of stress are poor concentration and reduced short-term memory capacity. Hence, it could be concluded that the principle 'Cognition and emotion are not separable' is correct in the context of the question.