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The Conners 3™ is the result of five years of extensive product development and research. You can count on Conners 3 to be a reliable and dependable tool capable of supporting you in the diagnostic process.

Based on the solid findings and key elements of its predecessor, the Conners’ Rating Scales–Revised (CRS–R™), Conners 3 has a greater focus on ADHD. The Conners 3 now addresses comorbid disorders such as oppositional defiant disorder and conduct disorder. Each parent, teacher and self-report form is available in a full length and a short version.

You will benefit from the following enhancements:

  • A large representative normative sample based on the latest U.S. census data
  • A refined focus on ADHD in school-age children with a new age range (6–18 for parent and teacher scales and 8–18 for self-report scales)
  • Strengthened DSM-IV-TR™ connections
  • Clear applications in education settings that help identify children with clinical symptoms
  • A manual that provides step-by-step guidance on how to use the tool in intervention planning and monitoring

As with its predecessor, the new Conners 3 is a multi-informant assessment. Gathering information from parents, teachers and youth provides a view of the child’s disorder and concerns from multiple perspectives.


The Conners 3 provides you with contemporary normative data—data that reflects the demographic of your diverse populations.

The large normative data sample is representative of the general U.S. population in terms of ethnicity/ race, gender, and parent education level (U.S. Bureau of the Census, 2000).

During the collection of data for the normative sample approximately 6,000 pieces of data were received. This comprehensive sample allowed for a thorough evaluation of the psychometric properties of all versions of the assessment tools.


You relied on the CRS–R, now you can trust the scientific validity and reliability of Conners 3. The Conners 3 reliability studies include evaluation of:

  • Internal consistency
  • Test-retest reliability
  • Inter-rater reliability
  • Standard error of measurement

Complete information on all psychometric properties can be found in the Conners 3rd Edition™ Manual.


The validity of the Conners 3 has been tested for:

  • Factorial validity
  • Relationships with other related measures
  • The ability to differentiate between those with ADHD and those without a clinical diagnosis


The forms are clear and easy to follow with low reading levels.

The reading levels* are as follows:

  • Full forms
    parent – 4.9
    teacher – 5.3
    self-report – 3.0
  • Short forms
    parent – 4.1
    teacher – 4.3
    self-report – 3.2


The Conners 3 provides you with a number of assessment options.

  • Informant; parent, teacher and self-report forms
  • Assessment length; full length forms, short forms, Conners 3 ADHD Index and Conners 3 Global Index


The Conners 3 provides the mental health professional multi-informant rating scales—parent, teacher and self-report, allowing you to build support for the diagnostic process. The Conners 3 has greater consistency in the scales across raters, allowing for easier interpretation of multi-informant assessments.

You will be able to critically examine where there are discrepancies between the informants, highlight certain behaviors, and easily compare results.

The parent and self-report options are also available in Spanish.

Full Length Forms

The full length form is a comprehensive tool that helps determine a diagnosis through direct links to the DSM-IV-TR™. The full length parent form includes 11 0 items, the full length teacher form includes 11 5 items, and the full length self-report form includes 99 items. The full forms are excellent in identifying the specific needs of each youth as well as areas that require attention and focus.

The full length form provides a number of innovations such as:

  • Three new validity scales (positive impression, negative impression, and inconsistency index) increase confidence in the informant’s response
  • In addition to the DSM-IV-TR symptom scales for ADHD, there are two new complete DSM-IV-TR symptom scales for all informants measuring oppositional defiant disorder and conduct disorder
  • Identification of youth who require immediate attention and intervention when they display severe critical conduct behaviors (weapon use, fire starting, etc.)
  • Added screener items for both anxiety and depression
  • The ability to measure how problems are impacting a child’s life at home, school and with friends with the addition of impairment questions
  • Spanish versions of the parent and self-report forms are also available
  • Addition of executive functioning to parent and teacher forms

Short Forms

The Conners 3 also gives clinicians the choice of using a short form. The short form, consisting of 39 items in the teacher forms, 43 in the parent forms, and 39 for the self-report forms, is an excellent tool for screening large groups of students who may require additional assessment. This form is beneficial when the assessment is repeated a number of times and/or when administration time is limited. The short form provides you with the strongest items from the full form’s empirical scales and includes positive and negative impression indices for all informants.

The short form is useful in monitoring the success of treatment programs over long periods of time.

Spanish versions are available for parent and self-report forms.

Conners 3 ADHD Index

The Conners 3 moves forward with a refreshed 10-item Conners 3 ADHD Index (Conners 3AI). The items are taken from the Conners 3 full length form and are the perfect tool when time is of the essence. The brief index also works well when you need to screen a large group of children and adolescents to see if further assessment of ADHD is warranted.

The items were specifically selected for this form and are proven to be the best in differentiating between youth with ADHD from those without a clinical diagnosis.

Additionally, this form can be used to monitor the effectiveness of treatment plans, and measure the patient’s response to intervention.

The Conners 3AI is included in the full length Conners 3 or can be purchased separately. Spanish versions are available for parent and self-report forms.

Conners 3 Global Index

The Conners 3 Global Index (Conners 3GI) is a fast and effective measure of general psychopathology. It includes the 10 best predictive items from the trusted market leader, CRS–R, parent and teacher rating scales.

You can depend on the reliability of this gold standard index, as the items have remained unchanged, and the normative data has been updated.

Professionals can rely on the Conners 3GI to carefully measure the general psychopathology of their clients and determine the next steps to take in further examination. The Conners 3GI has proven to be a fast and effective measure and is specifically used in monitoring treatment and intervention.

The Conners 3GI is included in the full length Conners 3 or can be purchased separately. Spanish versions are available for parent and self-report forms.


The Conners 3 offers you a number of administration options. The decision is ultimately up to you!

Paper and Pencil

In keeping with the CRS–R, the Conners 3 can be administered by using the QuikScore™ forms. This format is easy, quick and straightforward to administer.


When it comes to scoring the Conners 3, you have a wide array of options to choose from to meet your specific needs.

QuikScore™ Format

The profile sheets are included in the QuikScore package, and convert raw data scores to T-scores, providing you with a clear and easily understood results graph.

Computerized Scoring

Save money, time and resources with your choice of unlimited use software. Computerized scoring is available for all Conners 3 forms. These options allow for quick and effortless generation of profile, extended, and progress reports. Clear links to the DSM-IV-TR diagnostic criteria and indicators of eligibility for special education and related services under IDEA 2004 are provided.

Unlimited Use Software

Conners 3 for Windows®, is offered as unlimited use software. This means you can score the test an unlimited number of times once the program has been installed. All the available reports can be generated an unlimited number of times as well. The number of computers that can use the program is limited to the number of installations purchased.


Writing reports based on Conners 3 is simple and painless. You can actually cut and paste words and phrases from the software reports to create your own customized documents.


When using Conners 3, clinicians will not only be able to help identify a concern or disorder, they will now be able to receive guidance to help with intervention planning. The results from Conners 3 can be used to develop, monitor and revise a client’s treatment plan.

Intervention guidance enables clinicians to focus on their client’s individual needs and customize treatment plans. Specialized guidance is available for those requiring specific intervention planning in an educational setting.