Benton Test

The Benton Visual Retention Test is one of the best known and most widely used tests of immediate remembering for visual-spatial stimuli. The test consists of three parallel series, each with 10 geometric stimulus cards. The test person or the patient is shown one stimulus card for a short time (10 seconds), the figure of the card is to be draw directly after showing or after a short delay as accurately as possible. Further testing variations allow a shorter presentation time from 5 seconds, direct copying or simply selecting/ choosing of a seen template from four alternatives. The drawing form allows evaluating, especially in children, the assessment of the draw ability, whereas the electing/choosing form evaluates the memory without the drawing component. The German edition follows the fifth American edition of 1992. It contains a simplified scoring system, additional evaluation examples, advanced standard values and a summary with new findings (Benton test at the onset of dementia). The German Benton also contains, in contrast to the U.S., the election form. The numerous new German-published studies for the Benton test were specifically considered. The test is used in adults until an old age and in children older than 7 years (Benton 1974). Retest reliability for the drawing form is rtt = .854. The relationship between drawing form and electing/choosing form is relatively low (r = .55). There are numerous studies, especially in the

3 This retest reliability has been verified by the authors of the following sources:

1. psychologie/studi_hilfen/files/Hauptstudium/Diagnostik/Zahlen-Verbindungs-Test_(ZVT). doc++reliabilit%C3%A4t+ zvt+test+&hl=de&lr=lang_de&ie=UTF-8: (rtt = .81) and

2. (rtt between .81 and .97). Learning effects of the ZVT may thus be concluded in clinical trials.

4 This retest reliability has been verified by the authors of the following sources:

1. Retest reliability for the drawing form was rtt = .85

2. Retest reliability for the drawing forms C, D and E is given as average of rtt = 0.85.

Learning effects of the Benton test may thus be concluded in clinical trials.

evaluation of brain damage.The mean of correct reproductions of the 15-44-year old persons was 8 (IQ score of 95-109). In contrast, the mean of the OSAS patients was 6.76 before therapy (IQ score: 70-79), after a 3-day treatment with nCPAP it was 7.84 (IQ score: 80-94).The mean of error numbers of 15-39-year-old persons was three (IQ score of 95-104). The error mean of the study patients was 4.46 before therapy (IQ score: 90-94), after 3-day treatment with nCPAP it was 2.66 (IQ score: 105-109) (B├╝ttner et al. 2007).

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