Master degree (MA). Instructors in language schools and company language training
departments holding masters degrees in any field are still relatively rare. In the context of
the present study, any master degree achieved was coded as 'M.A.'. The possible ambiguity
in encoding a bachelor degree in any field as a single label also applies to the coding of
master's degrees. Some bachelor degrees, for instance, may be in a modern language or
linguistics, while some master degrees may in fact be in diverse fields ranging from finance
to geography. The specific details of graduate training in a particular field were,
unfortunately, not available from company or language school program administrators, thus
making for potential inferential problems in observing differences in effect sizes
attributable to educational qualifications.