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FifthTheory Classic Assessments™

A timeless legacy of scientific precision — rebuilt for the digital era.

FifthTheory Classic Assessments™ bring together decades of psychological science and modern digital delivery. Each tool—faithfully grounded in the work of doctors Louis Leon Thurstone, Edwin A. Fleishmann and David P. Campbell—has been enhanced for 21st-century organizations, ensuring accuracy, fairness, and insight in every report.

All assessments are delivered and scored online through a secure digital platform, FifthTheory Fusion, making them easy to deploy across any organization.

Client Responsibility: Clients are solely responsible for establishing the job relevancy and business necessity of these assessments. FifthTheory strongly encourages the involvement of HR professionals or consulting psychologists trained in employment testing to ensure compliance with federal and EEOC guidelines.

A one-time $250 platform setup and orientation fee applies to all new client accounts.    
By ordering, clients attest that they have read and agree to FifthTheory’s Terms and Conditions for Test Purchasers.

  • Thurstone Verbal Form

    $137.50 - $2,250.00
    $137.50 - $2,250.00
    $137.50 - $2,250.00
    $137.50

    Assess verbal reasoning and communication insight. The Thurstone Verbal Form evaluates verbal comprehension, vocabulary, and reasoning. It measur...

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    $137.50 - $2,250.00
    $137.50 - $2,250.00
    $137.50 - $2,250.00
    $137.50

  • Thurstone Test of Mental Alertness (TMA™)

    $187.50 - $1,500.00
    $187.50 - $1,500.00
    $187.50 - $1,500.00
    $187.50

    Measure how people think, learn, and adapt. The Thurstone Test of Mental Alertness (TMA™) is a concise and powerful measure of reasoning and lear...

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    $187.50 - $1,500.00
    $187.50 - $1,500.00
    $187.50 - $1,500.00
    $187.50

  • Thurstone Temperament Schedule (TTS™)

    $225.00 - $3,500.00
    $225.00 - $3,500.00
    $225.00 - $3,500.00
    $225.00

    Understand how people behave, lead, and collaborate. The TTS™ is a timeless measure of temperament—revealing how individuals express energy, cont...

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    $225.00 - $3,500.00
    $225.00 - $3,500.00
    $225.00 - $3,500.00
    $225.00

  • Leadership Opinion Questionnaire (LOQ™)

    $100.00 - $1,500.00
    $100.00 - $1,500.00
    $100.00 - $1,500.00
    $100.00

    A proven framework for developing and understanding modern leadership The Leadership Opinion Questionnaire (LOQ™), originally developed by Dr. Edwi...

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    $100.00 - $1,500.00
    $100.00 - $1,500.00
    $100.00 - $1,500.00
    $100.00

  • Campbell Leadership Inventory-90 Plus (CLI-90 Plus™)

    $748.75 - $10,975.00
    $748.75 - $10,975.00
    $748.75 - $10,975.00
    $748.75

    Assess and develop the complete leader. The CLI-90 Plus™ is a comprehensive, research-based framework for leadership growth and succession planni...

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    $748.75 - $10,975.00
    $748.75 - $10,975.00
    $748.75 - $10,975.00
    $748.75
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