2022 Edition

Intellectual and Developmental Disabilities Services (CA-IDDS) 1: Person-Centered Logic Model

The organization implements a logic model that describes how program activities and interventions will support the achievement of positive outcomes.




Intellectual and Developmental Disabilities Services support children, youth, and adults to achieve full integration and inclusion in the mainstream, make choices, exert control over their lives, and fully participate in, and contribute to, their communities.
All elements or requirements outlined in the standard are evident in practice, as indicated by full implementation of the practices outlined in the Practice Standards.

Logic models have been implemented for all programs and the organization has identified at least two outcomes for all its programs.
Practices are basically sound but there is room for improvement, as noted in the ratings for the Practice Standards; e.g.,  
  • Procedures need strengthening; or
  • With few exceptions, procedures are understood by staff and are being used; or
  • Logic models need improvement or clarification; or
  • Logic models are still under development for some of its programs, but are completed for all high-risk programs such as protective services, foster care, residential treatment, etc.; or
  • At least one client outcome has been identified for all of its programs; or
  • All but a few staff have been trained on use of therapeutic interventions and training is scheduled for the rest; or
  • With few exceptions the policy on prohibited interventions is understood by staff, or the written policy needs minor clarification.
Practice requires significant improvement, as noted in the ratings for the Practice Standards. Service quality or program functioning may be compromised; e.g.,
  • Procedures and/or case record documentation need significant strengthening; or
  • Procedures are not well-understood or used appropriately; or
  • Logic models need significant improvement; or
  • Logic models are still under development for a majority of programs; or
  • A logic model has not been developed for one or more high-risk programs; or
  • Outcomes have not been identified for one or more programs; or
  • Several staff have not been trained on the use of therapeutic interventions; or
  • There are gaps in monitoring of therapeutic interventions, as required; or
  • There is no process for identifying risks associated with use of therapeutic interventions; or
  • Policy on prohibited interventions does not include at least one of the required elements.
Implementation of the standard is minimal or there is no evidence of implementation at all, as noted in the ratings for the Practice Standards; e.g.,
  • Logic models have not been developed or implemented; or
  • Outcomes have not been identified for any programs; or
  • There is no written policy or procedures for the use of therapeutic interventions; or 
  • Procedures are clearly inadequate or not being used; or
  • Documentation on therapeutic interventions is routinely incomplete and/or missing; or
  • There is evidence that clients have been harmed by inappropriate or unmonitored use of therapeutic interventions.
Self-Study EvidenceOn-Site EvidenceOn-Site Activities
  • See program description completed during intake
  • Program logic model that includes a list of outcomes being measured
  • Policy for prohibited interventions
  • Procedures for use of interventions that limit movement, diminish sensory experience, limit personal freedom, or cause personal discomfort
  • Training curricula that addresses therapeutic interventions
  • Documentation of training and/or certification related to therapeutic interventions
  • Interviews may include:
    1. Program director
    2. Relevant staff


CA-IDDS 1.01

A program logic model, or equivalent framework, identifies:
  1. needs the program will address;
  2. available human, financial, organizational, and community resources (i.e. inputs);
  3. program activities intended to bring about desired results;
  4. program outputs (i.e. the size and scope of services delivered); 
  5. desired outcomes (i.e. the changes you expect to see in service recipients); and
  6. expected long-term impact on the organization, community, and/or system.
Examples: Please see the W.K. Kellogg Foundation Logic Model Development Guide and COA’s PQI Tool Kit for more information on developing and using program logic models.  
Examples: Information that may be used to inform the development of the program logic model includes, but is not limited to: 
  1. needs assessments and periodic reassessments; 
  2. risks assessments conducted for specific interventions; and
  3. the best available evidence of service effectiveness. 


CA-IDDS 1.02

The logic model identifies client outcomes in at least two of the following areas:
  1. change in clinical status;
  2. change in functional status;
  3. health, welfare, and safety;
  4. permanency of life situation;
  5. quality of life;
  6. achievement of individual service goals; and
  7. other outcomes as appropriate to the program or service population.
Example: Outcomes data can be disaggregated by race or ethnicity to identify and monitor disparities in service provision or effectiveness.

Fundamental Practice

CA-IDDS 1.03

Organization policy prohibits:
  1. corporal punishment;
  2. the use of aversive stimuli;
  3. interventions that involve withholding nutrition or hydration, or that inflict physical or psychological pain;
  4. the use of demeaning, shaming, or degrading language or activities;
  5. forced physical exercise to eliminate behaviours;
  6. unwarranted use of invasive procedures or activities as a disciplinary action;
  7. punitive work assignments;
  8. punishment by peers; and
  9. group punishment or discipline for individual behaviour.

Fundamental Practice

CA-IDDS 1.04

If the organization uses interventions that limit physical movement, diminish sensory experience, restrict personal freedoms, or cause personal discomfort, such interventions are implemented only when:
  1. the organization can document its reasons for believing that the intervention will be beneficial to the individual;
  2. the individual or his or her guardian has been fully informed about the risks and benefits of the intervention and has consented to it;
  3. the intervention is prescribed by a qualified medial practitioner or recommended by an interdisciplinary team;
  4. the organization periodically reviews the continued need for and effectiveness of the treatment or intervention;
  5. all direct service personnel working with an individual has been trained on their specific treatment plan and its parameters; and
  6. the intervention is not used as a substitute for appropriate staffing patterns, for the convenience of staff, or as punishment.


In regards to element (c), the prescription should include the specific parameters of the use of the intervention, including a time limit and specific set of behaviours or circumstances that the intervention should be applied.
NA The organization does not use interventions that limit physical movement, diminish sensory experience, restrict personal freedoms, or cause personal discomfort.
Examples: Examples of such treatments and interventions may include: use of splints or poseys to prevent self-injury; use of visual or auditory screens to reduce stimulation, and the use of distasteful substances, textures, or activities as a consequence for behavior.

Fundamental Practice

CA-IDDS 1.05

The organization:
  1. ensures personnel are trained on therapeutic interventions prior to coming in contact with the service population;
  2. monitors the use and effectiveness of therapeutic interventions;
  3. identifies potential risks associated with therapeutic interventions and takes appropriate steps to minimize risk, when necessary; and
  4. discontinues an intervention immediately if it produces adverse side effects or is deemed unacceptable according to prevailing professional standards.