Lafayette Instrument Logo
Lafayette Instrument Logo

RELATED CATEGORIES
Computer Psych Assessment > Intelligence Test Software

BASIC INTELLIGENCE FUNCTIONS - IBF - 7 YEAR LICENSE

Model 64033

Basic Intelligence Functions - IBF - 7 Year License
 
   
 

DETAILS

SYSTEM OVERVIEW

The Schuhfried VTS enables computer-assisted application of a large number of highly diverse psycho-diagnostic tests and measuring procedures. In developing the system much emphasis was placed on transparent structure and largely uniform design. It is therefore simple to operate and easy to understand and does not require any special computer skills.

The VTS basic module is required for administration of any of the available tests.

The Schuhfried VTS supports the administration of both single tests and test batteries. Many of the single tests are available in different test versions. These test versions may differ, for example, in terms of test duration or difficulty or may be parallel forms. They are characterized by different parameters reflecting specific test requirements. They have been designed for administration to a specific population (e.g. psychiatric patients, children, etc.) or for special measuring purposes (e.g. repeated measurements). Test batteries are compiled from the available single tests and test versions.

TEST OVERVIEW

Economical intelligence screening battery based on Thurstone's primary factors.

APPLICATION

Measurement of level and structure of intelligence; suitable for all relevant assessment purposes from the age of 13 years. The IBF tests are particularly useful as screening tools when a swift global overview of intelligence level is required. The intelligence profile can also be used as a preliminary to more detailed investigation of particular areas of ability.

Main areas of application: education, further education and career choice; performance-related aptitude assessment, clinical psychology, educational psychology; work psychology, industrial, and organizational psychology.

THEORETICAL BACKGROUND

The test aims to provide a differentiated assessment of the main areas of ability which are hierarchically structured at a level of medium abstraction. Building on Thurstone's primary factors of intelligence (1938), this tool for analyzing intelligence structure assesses the following four ability dimensions: verbal intelligence (35 items), numerical intelligence (40 items), spatial visualization (17 items) and memory (20 items).

ADMINISTRATION

There is a time limit for the completion of each group of items. Standardized instructions and practice items are presented before each group is worked through. The respondent selects the correct answer from a multiple choice range. Amendments can be made to individual answers within a task group, repeatedly if necessary. Within the permissible time limits it is possible to go back to any item in the group in order to change the answer.

TEST FORMS

Two test forms are available:
Test form S1 (standard form)
Test form S2 (easy short form)

SCORING

The results of the IBF are given in the form of z-transformed factor scores for the ability areas of verbal intelligence, numerical intelligence, spatial visualization and memory. An overall intelligence score is also provided, based on a hierarchical linear structural equation model.

All test scores are compared with the norms and percentile rankings and T-scores are given. The test protocol indicates how the individual items were answered (correct, incorrect, amended, omitted) and how long the test took.

RELIABILITY

Internal consistency (Cronbach's Alpha) for the individual areas of ability lies between r=0.84 (spatial visualization) and r=0.94 (numerical intelligence). For the test as a whole a value of r=0.95 was obtained. The test has been optimized to combine an economical test length with a very high degree of reliability.

VALIDITY

Studies show correlations with Raven's matrix tests APM (Raven, Raven & Court, 1998) and SPM (Raven, Raven & Court, 1979) of r=.30 to r=.41 (APM, N=237) and r=.42 to r=.52 (SPM, N= 256) for the item groups and r=.52 and r=.66 for the overall test score. Correlations with INKA (Heyde, 1995) are between r=.36 and r=.47, or r=.54 for the test as a whole (N=320).

NORMS

For Form S1 computer norms are available for 4771 individuals; these norms have also been separated according to age, education, and gender and are available for persons age 14 and up.

In addition, for Form S2 norms for 5581 individuals aged 13 and over are available.

TESTING TIME

  • Test form S1: approx. 45-65 minutes (actual test time).
  • Test form S2: approx. 30-45 minutes (actual test time).

ACCESSORIES

REQUIRED ACCESSORIES

Schuhfried Vienna Test System Image

Schuhfried Vienna Test System
Model 64032

The Schuhfried VTS enables computer-assisted application of a large number of highly diverse psycho-diagnostic tests and measuring procedures.

RELATED PRODUCTS

Basic Intelligence Functions - IBF - 50 Administration License Image

Basic Intelligence Functions - IBF - 50 Administration License
Model 64033-50

This test is considered an overall test of intelligence, whose item groups register various areas of intelligence. Particularly useful as screening tools when a swift global overview of intelligence level is required.

CONTACT US

Lafayette Instrument Company
3700 Sagamore Pkwy N
Lafayette, IN 47904

Phone: (765) 423-1505
Fax: (765) 423-4111
info@lafayetteinstrument.com

 

Home | Products | Support | About | Sitemap | Privacy

Copyright © 2009 - 2017 Lafayette Instrument Company. All Rights Reserved.


Top

PRODUCT SEARCH

Use this form to search for products from the Lafayette Instrument Online Family.



CONTACT US

Lafayette Instrument Company
3700 Sagamore Pkwy N
Lafayette, IN 47904

Phone: (765) 423-1505
Fax: (765) 423-4111

info@lafayetteinstrument.com

Copyright © 2009 - 2017 Lafayette Instrument Company. All Rights Reserved.