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Note: This test review was published by BPS on 2nd March 2006
Description of the Test
The ITTS is a series of tests designed to assess aptitude for a range of jobs related to information technology (IT) through the measurement of seven specific abilities. The manual positions the battery in terms of selection, placement and career development in relation to work such as hardware design, software engineering, programming and systems analysis. The ITTS is a redevelopment of the 1979 Programmer Aptitude Series (PAS). Three tests remain from this battery (NIT2, DITS and SIT7), and these were revised in 1991. Four new tests were developed on the basis of job analysis and validity studies, and reviews of relevant literature. The seven tests can be used as a full battery, as standalone tests, or in combinations. They are: 1) Verbal reasoning (VITi). The ability to reason with verbal material presented in a technical context (e.g. relating to computer manuals). 2) Number series (NIT2). The high-level ability to reason with numbers, particularly in terms of spotting relationships between numbers (e.g. identifying the next number in a sequence). The emphasis is on developing appropriate strategies, and so it is likely to be relevant in the selection of computer programmers or software developers. 3) Computer checking (CIT3). A speed test of the ability to check details accurately in non-contextual information (i.e. strings of letters and symbols). These skills are quite basic, but are likely to be important in any area of programming. 4) Syntax checking (CIT4). The ability to check details accurately in the context of mock programming language rules (e.g. do lines of programme conform to certain rules?). This is likely to be relevant for any job which involves program writing, coding or debugging. 5) Diagramming (DITS). The ability to follow complex instructions represented symbolically. A set of symbols are linked with specific commands (e.g. invert symbol, omit symbol), and these must be correctly applied to transform a list of given symbols. this is likely to be important in design and diagnostic work. 6) Diagrammatic reasoning (DIT6). The ability to infer rules from a symbolic system and apply them in new situations. This ability to work through problems requiring the isolation of underlying rules is likely to be of direct relevance to jobs which involve the design, maintenance, diagnosis and debugging of software. 7) Spatial reasoning (SIT7). The ability to visualise and manipulate shapes in three dimensions, when initially presented in two dimensions. Relevant jobs would include engineers, designers and draughts people.
Authors: S. Keeley, H. Baron, D. Hawkey, S. Hobley.
Test Publisher: SHL Group Ltd.
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