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Level of measurement or scale of measure is a classification that describes the nature of information within the values assigned to variables. [1] Psychologist Stanley Smith Stevens developed the best-known classification with four levels, or scales, of measurement: nominal , ordinal , interval , and ratio .
Constant sum scale – a respondent is given a constant sum of money, script, credits, or points and asked to allocate these to various items (example : If one had 100 Yen to spend on food products, how much would one spend on product A, on product B, on product C, etc.). This is an ordinal level technique.
Scaled questions – Responses are graded on a continuum (e.g.: rate the appearance of the product on a scale from 1 to 10, with 10 being the most preferred appearance). Examples of types of scales include the Likert scale, semantic differential scale, and rank-order scale. (See scale for further information)
The DAS-II is a test battery given individually to children, normed for children from ages two years and six months through seventeen years and eleven months. [50] It was normed on 3,480 noninstitutionalized, English-speaking children in that age range. [ 51 ]
For example, in the above five-point Likert item, the inference is that the 'distance' between category 1 and 2 is the same as between category 3 and 4. In terms of good research practice, an equidistant presentation by the researcher is important; otherwise a bias in the analysis may result.
For example, a 2009 study concluded that very young children with autism — as young as 18 months old — saw significant gains in IQ score, communication and language ability and social ...
Slight changes in the wording of instructions, or the wording of the items themselves, may have a significant effect on the child's response. Data obtained from ratings rely totally on the rater's familiarity with the child. In practice, the rater of a preschooler, for example, may not be the same person that spends time with the child.
Bloom's taxonomy is a framework for categorizing educational goals, developed by a committee of educators chaired by Benjamin Bloom in 1956. It was first introduced in the publication Taxonomy of Educational Objectives: The Classification of Educational Goals.