Vienna Test System: Signal-Detection

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Note: This test review was published by BPS on 9th August 2007

Description of the Test:

The Vienna Test System is a computerised collection of tests and assessments that can be used alone or combined as batteries of tests. The system contains some 74 instruments covering work, health and education and categorised as Intelligence, General Ability, Special Ability, Personality Structure, Attitude and Interests and Clinical tests. Many of the tests are multi-lingual with the majority being in German and English. Those tests that are produced in the English Language and have not been reviewed elsewhere are reviewed here as individual tests. SIGNAL is one of eight General Ability Tests within the fully computerised Vienna Test System. SIGNAL is a general performance test for the quantification of attention and visual differentiation. Based on signal detection theory, it assesses the registration of visual stimuli under time pressure over a long period of time. Test administration is possible with adults and children from seven years of age. The entire screen is covered with dots, some of which randomly disappear while other new ones appear. The test taker is required to respond when the critical stimulus (four dots forming a square) appears. The test taker responds through a computer keyboard or the VTS input device. There are four non parallel test forms (S1-S4) which differ in terms of foreground/background colour and signal duration. The tests are all 20 minutes in duration. S1 (Standard)presents white signals on a black background, whilst for S2 (Standard) this is reversed with black signals on a white background. S3 (Short duration) presents a short signal duration. S4 tests signal balance.

Authors: G. Schuhfried

Test Publisher: SCHUHFRIED GmbH