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The Magical Number Seven, Plus or Minus Two. " The Magical Number Seven, Plus or Minus Two: Some Limits on Our Capacity for Processing Information " [1] is one of the most highly cited papers in psychology. [2][3][4] It was written by the cognitive psychologist George A. Miller of Harvard University 's Department of Psychology and published in ...
In statistics, the 68–95–99.7 rule, also known as the empirical rule, and sometimes abbreviated 3sr, is a shorthand used to remember the percentage of values that lie within an interval estimate in a normal distribution: approximately 68%, 95%, and 99.7% of the values lie within one, two, and three standard deviations of the mean, respectively.
Rule of seven may refer to. "The Magical Number Seven, Plus or Minus Two", a highly cited paper in psychology. The "half-your-age-plus-seven" rule. Rule of sevens, establishing age brackets for determining capacity to give informed assent or to commit crimes or torts.
That presentation, "The magical number seven, plus or minus two", was later published as a paper which went on to be a legendary one in cognitive psychology. [4] Miller moved back to Harvard as a tenured associate professor in 1955 and became a full professor in 1958, expanding his research into how language affects human cognition. [4]
According to cognitive psychologist George Miller, one cannot hold more than seven items, plus or minus two, in conscious working memory; unconscious thought does not have this restriction. [12] UTT's Capacity Principle assumes this seven plus-or-minus-two rule to be true. [11]
George A. Miller suggested that the capacity of the short-term memory storage is about seven items plus or minus two, also known as the magic number 7, [2] but this number has been shown to be subject to numerous variability, including the size, similarity, and other properties of the chunks. [3]
The plus–minus sign or plus-or-minus sign, ±, is a symbol with multiple meanings. In mathematics, it generally indicates a choice of exactly two possible values, one of which is obtained through addition and the other through subtraction. In statistics and experimental sciences, the sign commonly indicates the confidence interval or ...
The plus and minus symbols are used to show the sign of a number.. In mathematics, the sign of a real number is its property of being either positive, negative, or 0.Depending on local conventions, zero may be considered as having its own unique sign, having no sign, or having both positive and negative sign.