The Surrey Clinical Research Centre has a dedicated suite where the psychometric testing is undertaken. The tests can also be undertaken in the sleep laboratories or at an external location if required.

Objective tests

We offer a range of objective psychometric assessments including the following electronic tests which are undertaken at stand-alone computer stations:

  • Choice Reaction Task (CRT)
  • Computerised Psychomotor Vigilance Test (CPVT)
  • Continuous Tracking Task (CTT)
  • Critical Flicker Fusion Task (CFF)
  • Karolinska Drowsiness Test (KDT)
  • Karolinska Sleepiness Scale (KSS)
  • Leeds Analogue Rating Scale (LARS)
  • Leeds Sleep Evaluation Questionnaire (LSEQ)
  • N Back Tests (N-Back)
  • Paced Visual Serial Addition Task (PVSAT)
  • Positive and Negative Affect Scales (PANAS)
  • Profile of Moods States (POMS)
  • Pursuit Tracking Task (Mouse Tracking Task, MTT)
  • Rapid Visual Information Processing Task (RVIP)
  • Short Term Memory Test (STM)
  • Stroop Task (STROOP)
  • Sustained Attention to Response Task (SART)
  • Texture Discrimination Test (TDT)


These are tests which assess everyday skills

Subjective Rating Scales

We use a broad range of paper-based psychometric tests including:

  • ARCI - 49
  • Advanced Progressive Matrices-Short Form (APM)
  • Brief Pain Inventory (BPI-SF)
  • Digital Symbol Substitution Test (DSST)
  • Epworth Sleepiness Scale (ESS)
  • General Health Questionnaire – Short Version (GHQ)
  • Horne-Ostberg Questionnaire
  • Karolinska Sleepiness Scale (KSS)
  • Linear Analogue Rating Scale (LARS)
  • Leeds Assessment of Neuropathic Pain
  • Leeds Sleep Evaluation Questionnaire (LSEQ)
  • Mini Mental State Examination (MINI)
  • National Adult Reading Test (NART
  • Pittsburgh Sleep Quality Index (PSQI)
  • Short Form36-V2 (SF36 –V2)
  • Word Recall Immediate and Delayed (WRi – WRd)

The benefits of using our psychometric testing capabilities include:

 Easy setup: The test batteries are configured and custom-tailored for each individual study. Extensive user-acceptance testing is performed prior to the start of a study to ensure accuracy and reliability of the system.

Scheduling: For each subject in a study, the test batteries keep track of the completed tests and display the upcoming testing schedule alerting our clinical staff of the next test cycle. Once a staff member has authorised the subject's testing cycle by way of a secure password, the measures follow one after the other without further intervention.

Reporting: Along with an electronic data record, the test batteries produce hardcopy summary reports. Data can be exported in a format that can be easily read by a variety of statistical analysis tools.


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