A Modification of the Method of Equal-Appearing Intervals

Guilford, J. P.; Dingman, Harvey F.

doi:10.2307/1418530

Cited by 13 publications

(5 citation statements)

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“…Another common problem with category scales is that subjects tend not to use the end categories [ 18,49]. This &dquo;category end effect&dquo; results in seven-point category scales being functionally reduced to five-point scales, five-point scales to three-point scales, etc.…”

Section: Psychophysical Scaling Of Comfortmentioning

confidence: 99%

Predicting the Handle and Comfort of Military Clothing Fabrics from Sensory and Instrumental Data: Development and Application of New Psychophysical Methods

Cardello

Winterhalter

Schütz

2003

Textile Research Journal

120

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Sensory and instrumental fabric characteristics that contribute to military clothing comfort are analyzed in a series of studies. A standardized hand evaluation methodology is checked for its sensitivity and reliability and used to characterize thirteen military fabrics. A labeled magnitude scale of comfort is developed using consumer magnitude estimates of the semantic meaning of verbal phrases denoting different levels of comfort/ discomfort. The sensitivity and reliability of this "CALM" scale is assessed in two studies, and the scale is then used by consumers to rate the handle and comfort of the thirteen test fabrics. The descriptive sensory data and comfort data are combined with Kawabata data obtained on a subset of the fabrics, and the data are analyzed with a principal components analysis. Multiple regression analyses are performed using the component scores to predict consumer comfort from the sensory and instrumental data. The results show a high degree of predictability of comfort responses from a combination of sensory and Kawa bata parameters.

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Section: Psychophysical Scaling Of Comfortmentioning

confidence: 99%

Predicting the Handle and Comfort of Military Clothing Fabrics from Sensory and Instrumental Data: Development and Application of New Psychophysical Methods

Cardello

Winterhalter

Schütz

2003

Textile Research Journal

120

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“…Figure SB shows the results of an interesting change in method introduced by Guilford and Dingman (18). They sought to get rid of the usual "end effects" observed with category scales by using a 15-point scale, but with the end stimuli (50 and 100 gm.)…”

Section: Lifted Weightsmentioning

confidence: 99%

Ratio scales and category scales for a dozen perceptual continua.

Stevens¹,

Galanter²

1957

Journal of Experimental Psychology

998

588

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Dr. Hudson read a paper (Dr, Millar having taken the chair pro tem.) on a new species of CEcistes, sent to him by Mr. Oxley, which he had at first named CE. Sphagni, but now proposed to call by the more descriptive name of CE. umbella, from its peculiar shape, which was shown by coloured drawings (see p. 1). After some remarks as to the nature of Conochilus volvo~, which, if it could be turned inside out, would have very much the appearance of a Melicerta, and commending the paper by Mr. Davis upon the subject, Dr. Hudson exhibited to the meeting some beautiful coloured transparent diagrams, prepared by himself, of Rotatoria, which he showed in the darkened room by means of three duplex lamps placed behind them. The series comprised L?kistes crystallinus, Limn!as ceratophylli, Limnias annula-tus, Cephalos@hon Limnias, Melicerta zingens, Melicerta tyro (for which the new name of M. Tubicolaria was proposed), Xtephanoceros Eichornii, Floseularia campanulata, Conochilus volvox, Lacinularia socialis, Euch-lanis triquetra, Pterodina patina, Actinurus Neptunius, Notommata aurdta, Pedalion mirum, Trochosphara aquatorialis (from the Philippine Islands), and Nais digitata. The exhibition was accompanied by brief remarks, in the course of which Dr. Hudson observed that he thought that Mr. Bedwell in his excellent paperon Melicertahad credited that creature with rather more intelligence than it deserved. Mr. Bedwell had stated that when a particle came down to the mouth, it descended upon a kind of elastic cushion, and he had credited this cushion with a discriminating power such that the moment an object touched it there was an instant decision and disposal of it, and it was taken in or passed to the right or left or rejected according to its nature and fitness for food or building purposes. For his own part, he doubted this explanation of the phenomena, for the reasons mentioned in his paper. A curious instance was also related of what seemed very like intelligent action on the part of a specimen of Floscularia campanulata, which, having seized and enveloped an in-fusorion too large and straight to enable it to withdraw within its ~

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“…The widest range (Cowdrick [7]) gives the usual category curve, concave downward, and we note that the middle weight in the series is assigned a value above the middle of the category scale. When the range is shortened (Guilford and Dingman [25]) the same general features are preserved. The shortest range is the one used by Fernberger (11) to determine a difference limen by the method of single stimuli.…”

mentioning

confidence: 95%

On the psychophysical law.

Stevens¹

1957

Psychological Review

3,078

1,588

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The general psychophysical law is that equal stimulus ratios produce equal subjective ratios. A first-order approximation is a power function whose exponent varies from 0.3 (loudness) to 2.0 (visual flash rate). This holds for Class I (prothetic) or quantitative continua, distinguishable by 4 criteria: "the j.n.d. increases in subjective size as psychological magnitude increases, category rating-scales are concave downwards when plotted against psychological magnitude, comparative judgments exhibit a time-order error . . . , and equisection experiments exhibit hystersis" (a lagging behind of apparent sense differences). Class II (metathetic) or qualitative continua are lacking in these 4 criteria. Psychological scales based on direct ratio methods are better than Fechnerian methods, e.g., method of paired comparisons. 75 references.

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A Modification of the Method of Equal-Appearing Intervals

Cited by 13 publications

References 0 publications

Predicting the Handle and Comfort of Military Clothing Fabrics from Sensory and Instrumental Data: Development and Application of New Psychophysical Methods

Predicting the Handle and Comfort of Military Clothing Fabrics from Sensory and Instrumental Data: Development and Application of New Psychophysical Methods

Ratio scales and category scales for a dozen perceptual continua.

On the psychophysical law.

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