1. Goodness of Fit (GoF)
Models for workforce devlopment in Challenging Behaviour Services:maximising 'Goodness of Fit'

2. Objectives At the end of the session participants will be able to:
State what is meant by GoF in relation to PBS
Identify relevant factors for GoF
Explain barriers to GoF
Explain the consequences of poor GoF
Describe ways to achieve GoF
State ways that stakeholders can be supported so that GoF is achieved

3. What is GoF?
‘Goodness of fit of a statistical model describes how well it fits a set of observations’ Wikipedia
Thomas and Chess definition
Applied a lot in Health and social situations -is an approach or intervention a good match for a particular situation or need?

4. What is GoF in the PBS context
‘Goodness of Fit refers to how matched the PBS plan is to the people and environments where it is being implemented’
Bro Morgannwg 2008
Also known as ‘contextual fit’ (Albin et at 1996)

5. Contextual Fit and PBS plans
‘Contextual fit refers to the congruence and compatibility that exists between specific features of a behavioral support plan and a variety of relevant variables relating to individuals and environments.’
Albin et al (1996)

6. What are the variables?
Characteristics of person for whom the PBS plan is devised.
Variables relating to persons implementing the plan.
Features of environments and systems within which plan is to be implemented

7. Characteristics of focus person
Functions of problem behaviours – agreement
Does the plan incorporate the person’s existing strengths and capabilities?
Does the plan address all areas of need?

8. Plan Implementers and Key Stakeholders
Values of supporters
Skills and knowledge of supporters
Congruence of PBS plan goals with goals implementers
Stressors of plan implementers

9. Environment and Systems (1)
Physical layout
Number of people in environment
Routines and activities in environment
Schedules of events and activities

10. Environments and Systems (2)
Staff/family resources
Training and support needs of plan implementers
Administrative and structural support
Equipment costs
Organisational policies
Plan initiation costs

11. Steps to ensuring ‘Goodness of Fit’
Comprehensive Functional Assessment
Preliminary plan to identify potential interventions-specialist and ‘team’
Collaborative meeting to formulate PBS plan
Implementation support
Plan evaluation and follow up support

12. Good plans should
Be responsive to values and goals of plan mediators.
Utilise the skills,knowledge and experience of mediators
Be compatible with the typical routine and activities of all the focus person's environments

13. Poor GoF can lead to
PBS plans being poorly or inconsistently
Not being followed through over a length of time
Plan not being used at all

14. What support do stakeholders/mediators need?
Values training
Training in Functional Analysis approaches and terminology
Ongoing support from facilitator-long term focus
Help with data collection/monitoring systems
Managerial support-stressors/resources