The Five Domains Model: Advancing Welfare Science

The Five Domains model expands the original Five Freedoms framework to include positive mental states, providing a more comprehensive welfare assessment tool for modern practice.

Key Facts

The Five Domains was developed by David Mellor in New Zealand to update the Five Freedoms for 21st century welfare science
The domains are: Nutrition, Physical Environment, Health, Behavioral Interactions, and Mental State
The mental state domain explicitly includes positive experiences as welfare goals, not just absence of suffering
The model is increasingly adopted in welfare auditing frameworks including Welfare Quality and RSPCA standards
All four physical domains are considered inputs that produce the fifth domain of mental state as the ultimate welfare outcome

Welfare Considerations

The Five Domains model represents the current frontier of welfare assessment science. Where the Five Freedoms focused on preventing suffering through freedoms from negative states, the Five Domains recognizes that welfare is not merely the absence of harm but the presence of positive experience. The mental state domain - the quality of the animal's internal experience - is explicitly placed as the purpose of all other welfare provisions. This reorientation from minimum standards to aspirational flourishing changes the question from 'are we preventing harm?' to 'are we supporting good lives?' The shift has practical implications for how farms, zoos, and other facilities set and measure welfare targets.

What You Can Do

Support welfare certification schemes that use the Five Domains framework for assessment
Advocate for positive welfare indicators alongside negative welfare prevention in standards
Support research that validates positive welfare measures for different species and contexts
Engage with the Five Domains framework as a basis for more ambitious welfare standards
Encourage facilities to use the Five Domains model to assess and improve their welfare programs