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TOL-F Tower of London – Freiburg version

C. P. Kaller, J. M. Unterrainer, S. Kaiser, M. Weisbrod & S. Aschenbrenner
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Application

Assesses planning ability in psychiatric and neurological patients and healthy individuals.
The test is used where impairment of the executive functions in general and planning ability in particular is suspected. However, the Tower of London can also be used as an ability test with healthy respondents. Planning ability refers here to the ability to plan ahead in a given context on the basis of clear rules, thereby arriving at the correct solution in the optimum way. Testing this ability is recommended in various neurological and psychiatric disorders in which impairment of planning ability is to be expected. This test is used in clinical neuropsychology to evaluate planning ability in detail; it provides a precise assessment that can be used as a basis for therapeutic intervention.

Administration

An image depicts a three-dimensional wooden model with three rods on which three balls of different colors are placed. These need to be moved into various arrangements, depending on the task. The left rod holds three balls, the middle rod takes two and the right rod has room for one. In each task the target state is always shown in the upper part of the screen and the starting state in the lower part. To solve the problem the respondent must change the starting state into the target state. The minimum number of moves required to achieve this is shown to the left of the starting state. Various rules must be observed, such as the rule that only one ball can be moved at a time.

Test forms

S1: Standard form A S2: Standard form B S3: Standard form C S11: Short form A
S12: Short form A
S13: Short form C

Scoring

The following main variable is scored:

Planning ability: Measure of the ability to plan ahead in a given context on the basis of clear rules, thereby arriving at the correct solution in the optimum way. Details are reported of error types, such as systematic rule infringements or changes of mind while working the items, and of planning and execution times.

Scoring elements

Table
Profile
Working time
Confidence interval
Profile analysis
Test protocol
Item analysis protocol
Progress chart
Special diagrammatic representation of results
Personalized Word report
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Test type

Special Ability Tests

Test information

adaptive
modular
language-free item material
parallel test form
conforms to the Rasch-model
additional device required
high level of test security
wide norm spectrum
test form available for online presentation - open mode
links to CogniPlus
supervisor-supported testing

Languages

Czech
Dutch
English
French
German
Hungarian
Italian
Portuguese
Russian
Slovene
Spanish
Turkish

Duration

approx. 11-16 minutes, depending on test form

Age

Norms for ages 13+.

Videos

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