ACER are excited to announce the 2022 release of the Conners 4™.

Conners 4 is the highly anticipated revision of Conners 3rd Edition (Conners 3®), the world’s leading AttentionDeficit/Hyperactivity Disorder (ADHD) assessment.

This newest edition builds on the long history and strengths of the multi-informant Conners Rating Scales and provides a thorough assessment of symptoms and impairments associated with ADHD, as well as common co-occurring problems and disorders, in youth aged 6 to 18 years.

With updated norms, improved workflows, and new and improved features, Conners 4 will be an invaluable part of your ADHD battery.

Download the Conners 4 Info Sheet

Comparing Conners 3 and Conners 4

New Features of the Conners 4


Improved usability with customisable reports and a digital manual.

Improve efficiency with a fully digital assessment, online scoring and reporting, easy inventory management and printable forms.


Address clinical concerns with a Severe Conduct and Self-Harm Critical Items and a Sleeps Problem Indicator.

Measure impairments related to ADHD symptoms in the school, social, and family domains.

Evaluate new content areas and common co-occuring problems such as Emotional Dysregulation, Depressed Mood and Anxious Thoughts.

Apply a dimensional approach to ADHD assessment with an additional DSM-5 Symptoms Scale - Total ADHD Symptoms.


Evaluate severity of symptoms and level of impairment due to symptoms by comparing the youth's results to an ADHD Reference Sample (others already diagnosed with ADHD).


Facilitate collaboration with parents using the enhanced Feedback Handout (easy-to-understand explanation and summary of results).


Increased fairness and inclusivity with gender-neutral language, culturally sensitive items, and items and scales that show no evidence of measurement bias regarding gender, race/ethnicity, country of residence, or parental education level.


Evaluate an individual's relative strengths and weaknesses using Within-Profile Comparisons.

Additional Features

Conners 4 - coming soon to the ACER Psych Testing Platform

Whilst currently available on MAC+, coming soon to A.C.E.R you will have the option to access your A.C.E.R online tests and the Conners 4 in one convenient place - the ACER Psych Testing Platform.

The ACER Psych Testing Platform offers:

  • the option to print your Conners forms and key-enter data, or test fully online
  • easy to use candidate management capabilities
  • single or bulk candidate upload
  • in-built customer communication features
  • instant candidate reporting capabilities
  • a personalised online store that is always accessible
  • a dedicated support team

Onboarding resources for existing Conners 3 online users (MAC+)

An efficient process will be made available to online product users of the Conners 3rd Edition (Conners 3®) to help your transition to the Conners 4th Edition (Conners 4™). This simple self-serve option will be implemented through the MHS Online Assessment Center+.

On the day of Conners 4 release, all MHS Online Assessment Center+ (MAC+) Admin account users who have Conners 3 Online uses will have immediate access to Conners 4 within their account.

  • The transition process will launch when Conners 4 is released and will be available for 12 months from the release date
  • Admin users must enable Conners 4 through Account Settings/Manage My Assessments. Admin users can also grant their Sub-users access to Conners 4 by enabling access for Sub-users.
  • Admin and Sub-users can administer Conners 4 to clients even when their Conners 4 use balance is zero (as per above)
  • Admin and Sub-users who want to generate a Conners 4 report when their Conners 4 use balance is zero can do so by selecting an available Conners 3 use. Admin and Sub-users can specify which Conners 3 use to substitute during the report generation.
  • Please note: During the transition, if Conners 4 uses are purchased and added to the account, the Conners 4 uses will be used first to generate reports, before the substitution option is available again