The Oxford Dictionary of English (online, 3rd edition, Oxford University Press, 2010) defines non-judgemental as:
not judgemental; avoiding moral judgements: it may well be the non-judgemental personality of a machine that motivates a child to persevere | plain, non-judgemental feedback.
Synonyms include unbiased, unprejudiced, prejudice-free, accepting, non-partisan, neutral, non-aligned, open-minded, non-discriminatory, anti-discrimination, objective.
Engage with the wider context; embrace diversity and seek explanation without making assumptions.
University of Hull Staff Development Events
Unconscious Bias: Impact and Actions
Trans Awareness, An Introduction
LGBT Inclusion In The Workplace
E-Learning Course - Equality and Diversity
TED is a nonprofit organisation devoted to spreading ideas, usually in the form of short, powerful talks (18 minutes or less). Most of these can be found on YouTube.
Being non-judgemental is one of the core conditions as described by Carl Rogers, the grandfather of humanistic counselling and therapy. The library has many of his works:
The Person-Centred Association
An organisation that embraces and promotes the person-centred way of being: the striving to create relationships based in genuine acceptance and empathic understanding.
Norfolk County Council's document on non-judgemental communication, although aimed at health workers, is a good concise guide: