Empirical research on the treatment process has long time - for good reasons - avoided to even try to measure countertransference, although this dimension of the psychoanalytic work has gained in momentum over the last decades. Our paper reports on various efforts of how to approach such a methodology for measuring such an elusive concept. The distinction between habitual patterns of countertransference and situational affective reactions seems most likely a helpful way to approach the topic. Recent empirical research and measures on countertransference will be presented and discussed.