The paper presents an experimental study on the
perception of the Gen-eral British monophthongs that was conducted in three
stages in 2014–2018. The vowels observed are studied by (i) comparing the vowel
sys-tems of General British and Slovene, and (ii) by conducting an experi-ment
on their perception. The analysis focuses on the participants’ over-all
performance, their most frequent misperceptions, and their progress over the
course of one semester. The results indicate: that the previously observed production
difficulties mirror perception difficulties; that the discriminative failures
of FL vowels are not entirely predictable by com-paring vowel systems; that new
sound contrasts are assimilated in differ-ent ways; and that the participants’
perception of foreign language pho-nemes can benefit from explicit instruction.