Can Belbin Team Roles change?
Yes, Team Roles can change over time, as our experience, functional role and working environment changes. Whilst a complete reversal of roles is unlikely, you may find that Team Roles move up or down your profile.
Here's a little more detail.
Belbin measures behaviour, rather than personality.
Whilst the two are interlinked (personality influences behaviour), personality remains fairly static, whereas behaviour isn’t so fixed. Since behaviour changes, we can expect our Team Roles to change as well.