Colour discrimination, colour naming and colour preferences among individuals with Alzheimer's disease

✍ Scribed by Helle Wijk; Stig Berg; Lars Sivik; Bertil Steen

• Publisher: John Wiley and Sons
• Year: 1999
• Tongue: English
• Weight: 239 KB
• Volume: 14
• Category: Article
• ISSN: 0885-6230
• DOI: 10.1002/(sici)1099-1166(199912)14:12<1000::aid-gps46>3.0.co;2-e

✦ Synopsis

Objective:

To study the ability of colour naming, colour discrimination and colour preference in alzheimer's disease (ad).

Design:

Descriptive, consecutive sample.

Participants:

Fifty subjects >65 years with ad.

Interventions:

Testing colour discrimination, colour naming and colour preferences.

Main outcome measures:

Ability to detect colour differences in the yellow, red, blue and green areas, ability to assign a name to 22 colour samples, ability to rank seven colours in order of preference.

Main results:

Discrimination ability was significantly better in the yellow and red area and for lightness variations. cognitive decline had a significant impact on naming mixed colours and using elaborate colour names. severity of dementia did not affect the preference rank order of colours.

Conclusions:

Ability to discriminate is affected in ad, with most errors in the blue and green area. naming colours shows a cognitive decline. preferences for colour are stable despite the disease.