This paper provides a comparison of member attitudes in the Professional Association of Teachers (PAT) and the National Unions of Teachers (NUT), oftenseen as the most “moderate and “militant” teacher unions respectively. Findingssuggest that members of PAT were higher in job satisfaction, and both organizationaland professional commitment, with NUT members higher in union citizenshipbehaviour (UCB) and general pro-union attitudes. For NUT members, pro-unionbeliefs had a significantly stronger effect on union commitment, and unioncommitment on UCB. These findings are consistent with the relative images of thetwo unions, and also with Bamberger et al.’s (1999) suggestion that the nature of themembership is likely to moderate the antecedents of union commitment andparticipation
