Frasi di Ulric Neisser (10 frasi) | Citazioni e frasi celebri

Ulric Neisser: 10 frasi 0 Mi piace

Ulric Neisser: Frasi in inglese

“Attention is not a mysterious concentration of psychic energy; it is simply an allotment of analyzing mechanisms to a limited region of the field. To pay attention to a figure is to make certain analyses of, or certain constructions in, the corresponding part of the icon.”

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Ulric Neisser

Origine: Cognitive Psychology, 1967, p. 88-89

“To deal with the whole visual input at once, and make discriminations based on any combination of features in the field, would require too large a brain, or too much "previous experience" to be plausible.”

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Ulric Neisser

Origine: Cognitive Psychology, 1967, p. 87

“Paying attention is not just analyzing carefully; rather, it is a constructive act… What we build has only the dimensions we have given it.”

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Ulric Neisser

Origine: Cognitive Psychology, 1967, p. 96; As cited in: A.H.C. Van der Heijden (1996)

“The fact that the span of apprehension averages only four or five… probably results from the high rate of encoding. In a tachistoscopic experiment the subject must read the fading icon as rapidly as possible.”

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Ulric Neisser

Origine: Cognitive Psychology, 1967, p. 42 ; As cited in: A.H.C. Van der Heijden, "Visual attention," in: Handbook of Perception and Action, Vol. 3. 1996

“Given such a sweeping definition, it is apparent that cognition is involved in everything a human being might possibly do; that every psychological phenomenon is a cognitive phenomenon. But although cognitive psychology is concerned with all human activity rather than some fraction of it, the concern is from a particular point of view. Other viewpoints are equally legitimate and necessary. Dynamic psychology, which begins with motives rather than with sensory input, is a case in point. Instead of asking how a man's actions and experiences result from what he saw, remembered, or believed, the dynamic psychologist asks how they follow from the subject's goals, needs, or instincts.”

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Ulric Neisser

Origine: Cognitive Psychology, 1967, p. 4.

“If we allow several figures to appear at once, the number of possible input configurations is so very large that a wholly parallel mechanism, giving a different output for each of them, is inconceivable.”

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Ulric Neisser

Origine: Cognitive Psychology, 1967, p. 94

“To cope with this difficulty [of limited capacity], even a mechanical recognition system must have some way to select portions of the incoming information for detailed analysis.”

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Ulric Neisser

Origine: Cognitive Psychology, 1967, p. 94

“Cognitive processes surely exist, so it can hardly be unscientific to study them.”

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Ulric Neisser

Origine: Cognitive Psychology, 1967, p. 5

“The attentive synthesis of any particular letter or figure takes an appreciable time, of the order of 100ms…If a whole row of letters is to be identified, they must be synthesized one at a time… To "identify" generally means to name, and hence to synthesize not only a visual object but a linguistic-auditory one… Hence the span of apprehension is limited to what can be synthesized, and then verbally stored.”

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Ulric Neisser

Origine: Cognitive Psychology, 1967, p. 103; As cited in: A.H.C. Van der Heijden (1996)

“The term "cognition" refers to all processes by which the sensory input is transformed, reduced, elaborated, stored, recovered, and used. It is concerned with these processes even when they operate in the absence of relevant stimulation, as in images and hallucinations. Such terms as sensation. perception. imagery. retention. recall. problem-solving. and thinking. among others. refer to hypothetical stages or aspects of cognition.”

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Ulric Neisser

Origine: Cognitive Psychology, 1967, p. 4

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