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CFD-S1

Cognitive Functions Dementia
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Please note that this product can only be administered if you have a valid Vienna Test System administration software license for VTS online or a local VTS version 8.8.10 or higher.

This product requires an additional device. For more information please contact us.

Field of Application+
NEURO
 
TRAFFIC
 
SPORT
 
HR
 
Detailed Description+

The CFD Cognitive Functions Dementia test set assesses neuropsychological dimensions that are relevant for early detection of dementia and neurocognitive disorders (according to DSM-5). Cognitive impairments are the main symptoms of dementia aside from a reduced ability to master activities of daily living. With the help of the test set CFD, cognitive abilities from the neuropsychological dimension areas attention, verbal long-term memory, executive functions, expressive language as well as perceptual motor functions can be assessed. The intended test set procedure is standardised for three different versions, screening (16 min.), standard (46 min.) and long form (65 min.). The easily understood scoring offers the CFD index for a quick assessment of cognitive impairment across dimensions and provides a rapid overview of impaired and unimpaired cognitive functions. In addition, the initial and follow-up assessment can be evaluated together and presented clearly. So-called RCI (=Reliable Change Indices) examine occured changes in ability per dimension for its statistical significance and recognize a possible decrease in cognitive ability over time. The features of the test set are the possibility of presenting the entire CFD test set on a touchscreen, supervisor-supported instructions as well as norming for the 50+ age group across tests with the option for a norm adjustment. This way, the possible impacts of age, gender, and level of education on the test performance are considered automatically for this adjustment.

The test set is also available in two parallel forms (S1 and S2). Correspondingly, the test set makes it possible to measure changes in the psychological ability of patients over time by allowing for follow-up assessments and comparisons across two test occasions.

For administrative reasons, CFD-S1 and CFD-S2 are managed as separate products in VTS Marketplace. If you purchase test specifications for CFD-S1, you can also automatically use them for CFD-S2 or vice versa.

Please note that a calibrated touch screen is needed for displaying the CFD index as well as the dimension indices and norm adjustment. For more detailed information don't hesitate to contact us.

Languages+

English (USA)

Italian

Portuguese

German

Validation+

The high content validity of the CFD test set results from its close alignment with the current diagnosis guidelines for the selection of the cognitive dimensions, particularly those that are listed in the DSM-5 on neurocognitive disorders. Clinically proven research paradigms were used to assess these cognitive functions. The paradigms were evaluated in terms of publication frequency, faithfulness to concept, experience of use with dementia patient groups, validity and reliability.

The construct validity was examined based on the 50+ CFD norm sample using the structural equation model. It was possible to confirm that the individual cognitive subdimensions in the CFD test set correlate to an extent that is in accordance with the theory.

Regarding the criterion validity, different groups of individuals are being examined with the CFD test set and other tests as part of a multicentric, prospective study. An analysis of the collected data shows that the CFD test set can reliably distinguish between dementia patients or persons with suspected dementia on the one hand and parallelized, healthy persons on the other.

Test administration+

Controlled Mode


Dimensions+
The CFD test set comprises the following dimensions and tests:
Dimensions Tests Test forms Duration in min.
Total length if all dimensions are presented approx. 46
Attention
Alertness, intrinsic (visual) WAF S1 approx. 3
Divided attention, cross-modal (visual/auditory) WAF S1 approx. 9
Processing speed TMT-L S1/S2, Part A approx. 1
Verbal long-term memory
Subdimensions:
Short-term delayed recall
Long-term delayed recall
Recognition
AWLT S1/S2 approx. 12
Executive functions
Cognitive flexibility TMT-L S1/S2, Part B approx. 1.5
Working memory, spatial CORSI S7 approx. 8
Expressive language
Verbal fluency - semantic WIWO S1/S2 approx. 3
Verbal fluency - lexical WIWO S3/S4 approx. 4
Object naming WOBT S1/S2 approx. 5
The following tests can be used to test other functions if required:
Dimensions Tests Test forms Duration in min.
   
Perceptual motor functions
Visuoconstruction VISCO S3/S4 approx. 15
Resilience to fatigue
Alertness, intrinsic (visual) WAF (retesting) S1 approx. 2
Attention
Alertness, cross-modal phasic (visual) WAF S1 approx. 2

Products specifications
Languages English (USA), German, Italian, Portuguese
Test information cross-test norming <i class="fas fa-info-circle tooltips test-info" data-container="body" data-placement="top" data-toggle="tooltip" title="The entire test set has been administered to a representative sample. This yields cross-test norms."></i>, cross-test scoring <i class="fas fa-info-circle tooltips test-info" data-container="body" data-placement="top" data-toggle="tooltip" title="In addition to the results of the individual tests or test dimensions, a cross-test score, such as a FIT score, is also reported. This enables general test performance to be rapidly interpreted."></i>, supervisor-supported testing <i class="fas fa-info-circle tooltips test-info" data-container="body" data-placement="top" data-toggle="tooltip" title="The supervisor describes the tasks verbally. A sample task is then presented. This promotes interaction between the supervisor and respondent."></i>, additional device required <i class="fas fa-info-circle tooltips test-info" data-container="body" data-placement="top" data-toggle="tooltip" title="A SCHUHFRIED peripheral device (e.g. a Response Panel) is needed for proper administration of the test."></i>, cross-test validation <i class="fas fa-info-circle tooltips test-info" data-container="body" data-placement="top" data-toggle="tooltip" title="The practical value of the test set has been demonstrated in at least one validation study."></i>, test(s) specifically adapted for test set <i class="fas fa-info-circle tooltips test-info" data-container="body" data-placement="top" data-toggle="tooltip" title="At least one test has been adapted for administration in the test set. For example, a specifically adapted test may have been shortened to reduce the overall testing time. The psychometric properties of all adaptations have been investigated and confirmed."></i>