Two characters on the "Star Trek" television series, Mr. Spock and Commander Data, are completely logical. They make their decisions on the basis of realistic considerations, not emotions or moral judgment. They also show no emotions, ever. A psychotherapist would describe their affect asnalities are entirely

ego

Explanation:

Freud first introduced the idea of the ego, as we know it, in his famous paper, The Ego and the Id, in 1923. He described the human mind in this book as being categorized into three distinct parts: the superego, the ego, and the Id. Each of these parts plays a distinct role in human cognition. The ego is the key component of human cognition that can take a step backward, critically analyze facts, and make sound decisions about our best interests. thus an individual can come to equate the ego with our true identity. As per the question, the rational decision-making trait of the two characters their ego.

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