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Shape-Texture-Identification test (STI2) based on the original design by Birgitta Rosén

 

Instructional video: https://youtu.be/eNBKAUrfFjA 

 

Thank you for your interest in the STI2

This STI2  test is produced in Switzerland by sensory –test.com in accordance with the parameters established by and permission granted by the  test creator, Birgitta Rosén, of Sweden.

The STI2 is made from polyoxymethylene (POM) plastic. POM is characterized by its high strength, hardness and rigidity. 

 

Instruction manuals available in English, German, French, Spanish and Swedish upon request

 

Taking care of the test:

We recommend that you spray the test with a non-abrasive cleaning solution (soap & water) and wipe it dry with a soft cloth.  Do not immerse the test in water.

 

If you have any quesions contact us at

info@sensory-test.com

 

Image Gallery (see also the instruction Video)


STI sold world wide - Switzerland, Germany, Austria, Slovenia, Sweden, Finland, UK, Spain, Bulgaria, USA, AustraliaSTI sold world wide - Switzerland, Germany, Austria, Slovenia, Sweden, Finland, UK, Spain, Bulgaria, USA, Australia

The Shape Texture Identification Test

This test for the assessment of tactile gnosis, was developed in Sweden by occupational therapist, Birgitta Rosén and hand surgeon, Göran Lundborg.  They introduced this test in 1998 in the Journal of Hand Therapy.  The test is a standardized outcome measure of sensory function of the median and ulnar nerves of the hand.  It is performed in a standardized manner using an occlusive screen so that test subjects, cannot see the test itself and thus must rely on tactile gnosis to identify shapes and textures.  It utilizes active touch identification of three types of shape and three textures (sets of raised dots) these are fixed on three different discs.  A strength of this test is that although it requires active touch, it does not require a lot of dexterity.  The test has been shown to excellent psychometric properties, particularly for patients with repair of the median and /or ulnar nerve.  Recently, the reliability of this test for use with neurological patients, was confirmed by Ekstrand et al. 2016. 

Shape Texture Identification Test

Rosén & Lundborg, 1998

Psychometric Property  

Nerve Injury & Repair

Vibration Neuropathy

Compression Neuropathy (Carpal Tunnel Syndrome)

Sensitivity

1.0

0.65

0.40

Specificity

0.90

0.90

0.95

Test-retest reliability

0.79-0.81 weighted kappa value

 

 

Internal consistency for  test items 

0.78 Cronbach alpha

 

 

 

Sensitivity was reported as 1.0 for patients with median or ulnar nerve repair, 0.65 for vibration neuropathy patients, and 0.40 for patients with carpal tunnel syndrome (Rosén & Lundborg 1998).   Specificity was reported as 0.95 for carpal tunnel syndrome and 0.90 for patients with vibration neuropathy and nerve repair (Rosén & Lundborg 1998).  Good reliability was noted for patients with injured hands (0.79 weighted kappa value) and very good reliability (0.81) was noted for uninjured hands, internal consistency of test times was good (0.78) (Rosén & Lundborg 1998).  Recently, the reliability of this test for use with neurological patients, was confirmed by Ekstrand et al. 2015.

 

Ekstrand Link: http://www.pmrjournal.org/article/S1934-1482(15)00402-5/abstract?rss=yes

 

A literature list regarding this test can be found on the literature references page. If you have completed a study using the STI test, please let us know, so that it may be included on the literature listing.