Cognitive complexity is a psychological characteristic or psychological variable that indicates how complex or simple is the frame and perceptual skill of a person.t is used as part of one of the several variations of the viable non-empirical evaluation model GOMS (goals, operators, methods, and selection rules); in particular the GOMS/CCT methodology. Cognitive complexity can have various meanings:
Essential tremor is a nerve disorder in which tremors occur without an identifiable cause. The tremor resembles an exaggerated shaking and occurs when a person is using his or her hands but does not occur while the hands are at rest. Parkinsonâs tremors are just the opposite â noticeable shaking when at rest but no shaking when the hands are engaged.
Hand tremor is an involuntary muscle movement, trembling, or shaking of the hands. Tremor most accurately refers to a small, rhythmic shaking movement that occurs in a back-and-forth pattern. Everyone has a small, sometimes undetectable, shake when they move their hands. Fatigue, stress, feelings of anger or fear, caffeine, and smoking can make this normal shaking more prominent.