Communication and Mental Capacity: Why the Right Approach Matters

Communication and mental capacity are fundamentally linked. A person may have the ability to make a decision, yet this can be overlooked if information is not presented in a way they can understand or if they are not adequately supported to express their views. Effective communication is therefore not peripheral to capacity work; it is an essential component of a fair, person-centred, and legally compliant assessment.

Key principles in practice

A key principle in practice is to ensure that professionals do not add to the barriers a person already experiences. Complex language, rushed conversations, unfamiliar environments, and inaccessible written materials can all undermine effective communication. In such circumstances, what may appear to be a lack of capacity may in fact reflect a failure to adapt the communication process to the individual’s needs.

Mental capacity assessments frequently involve complex communication. An individual may require additional time, repetition, simplified language, or information to be broken down into manageable stages.

They may also need support to demonstrate understanding, retain information long enough to make a decision, weigh the relevant factors, and communicate their choice. This requires careful attention to both receptive communication, which concerns how information is understood, and expressive communication, which concerns how views, preferences, and decisions are conveyed.

Reasonable communication adjustments can significantly improve the quality and accuracy of an assessment.

Accessible written materials, visual aids, pictures, symbols, and objects of reference may all assist a person to process information in a way that is meaningful to them.

Sensory needs must also be taken into account. A person with sight or hearing loss may require large print, appropriate lighting, assistive hearing support, reduced background noise, or a quieter setting. Such adjustments are often essential to ensuring that the assessment is both accurate and person-centred.

The involvement of interpreters may be crucial in mental capacity assessments, particularly where English is not the person’s first language or where they use a specialist communication method. Interpreters should be appropriately skilled, impartial, and able to facilitate understanding without influencing the decision. 

It is equally important to draw on the knowledge of those who know the person well. Family members, carers, and other professionals can often provide valuable insight into the person’s usual communication style, the meaning of particular gestures or responses, and any preparation necessary that may help them engage more effectively.

Communication tools

A range of communication tools may support fuller participation in decision-making.

Makaton, for example, combines speech, signs, and symbols to support people with learning disabilities or communication difficulties.

Eye gaze technology can enable individuals with significant speech and motor impairments to communicate using eye movement alone.

Gestures, facial expressions, and other forms of non-verbal communication may also carry important meaning, particularly where spoken language is limited or absent.

This underlines the importance of observation and active listening. It is essential to remain attentive to less obvious or unconventional forms of communication and avoid assuming that silence, delayed responses, or unfamiliar body language indicate a lack of understanding.

A genuinely responsive approach requires the assessor to adapt their communication, check understanding carefully, and respond to the individual’s cues rather than expecting the person to conform to a standardised method of interaction.

British Sign Language (BSL) is an essential means of communication for many Deaf people. It is a fully developed visual language that relies on hand movements, facial expressions, and body language. Where a person uses BSL, this must be properly recognised and accommodated as part of inclusive and lawful practice. The same principle applies across all forms of communication: the objective is to create the conditions in which the person can participate as fully as possible in the decision-making process.

Communication should never be viewed as separate from mental capacity.

The way information is presented, the way questions are framed, and the support provided to enable a person to respond can all affect the outcome of an assessment. By removing avoidable barriers and using appropriate communication strategies, professionals can ensure that capacity assessments are more accurate, more respectful of the individual, and more consistent with legal and ethical obligations.

At Thornton & Lee, we recognise that effective communication is fundamental to a robust and person-centred mental capacity assessment.

We take time in advance of each appointment to understand the individual’s preferred communication style and to identify any adjustments or support that may be required.

Our team is experienced in working with a wide range of communication methods, including accessible information, visual supports, non-verbal communication, working with interpreters, and specialist approaches where needed.

By adapting our approach to the individual, we aim to ensure that each person is given the best possible opportunity to understand, participate, and communicate their wishes clearly.