The terms ‘manic–depressive illness’ and ‘bipolar disorder’ are comparatively recent, and date back from the 1950s and 1980s respectively. The term ‘bipolar disorder’ (or ‘bipolar affective disorder’) is thought to be less stigmatizing than the older term ‘manic–depressive illness’, and so the former has largely superseded the latter. However, some psychiatrists and some people with bipolar disorder still prefer the term ‘manic–depressive illness’ because they feel that it reflects the natureof the disorder more accurately.