# Tangled Lines Test - Online Version

**Description of the Tangled Lines Test:** The Tangled Lines test, first proposed by A. Rey and modified by complication by K. Platonov, is a blank with several intertwining straight lines starting on the right side and ending on the left side of the sheet. In this case, the order of arrangement of the beginnings of straight lines on the left side does not coincide with the order of arrangement of the ends of lines on the right side. The subject's task is to number the lines on the right side of the sheet in accordance with their serial number on the left side of the sheet, that is, mentally following the line, the subject needs to determine where this line ends and what serial number it has, this number should be written on the right side of the sheet next to with the end of the corresponding line. At the same time, it is important to do this precisely mentally - with a glance, without helping yourself with a finger or pencil. Perform such an operation one by one with each line within the allotted time - usually 5 - 7 minutes. Note that wherever the lines touch, they cross each other.

Interpretation of the Tangled Lines results:

**Rhys variant as modified by Platonov** offers the following interpretation of the test:

reveals the value ** attention span - U = T * (n / N) **, where T is the test execution time, n is the number of lines, and N is the number of correctly numbered lines.

The level of stability of attention is determined from the time spent on the test.

- 213 seconds or less - excellent result
- 214 - 359 seconds - good result
- 360 - 419 seconds - average result
- 420 - 779 seconds - poor result
- 780 seconds or more - very bad result

In this case, the test execution is normal - 7 minutes

There is also a formula for estimating the ** concentration coefficient: Q = ((a - b) * t) / a **, where a is the number of lines, in this case there are 25, b is the number of errors and unnumbered lines, t - test execution time. And the formula for estimating ** concentration deficit D = t - Q **, which, ideally, should be zero.

**Ray's variation - 10-line test for children 11 to 17 ** offers the following interpretation of the tests based on the number of errors and the time spent on the test.

- High level of attention span - 10 correct answers with a runtime of up to 1 minute 20 seconds (80 seconds).
- Average level of attention span - 8 - 10 correct answers in up to 2 minutes, or 120 seconds.
- Low level of attention span - 0 - 7 correct answers regardless of time, or 8 - 10 correct advice for more than 120 seconds

Also, Ray's variation of the Tangled Lines method offers a percentile interpretation, but no precise data was found on the use of a percentile table.

© Oleg Akvan

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