This paper presents the acoustic features of speech recorded during interactions with foreigners in Danish and Finnish languages in the light of Speech Accommodation Theory. It presents selective aspects of speech attuning to linguistically less-fluent interlocutors in temporal and spectral perspectives. Foreigner-directed speech and native talk were compared in a spectral (F0, vowel space and intensity) and a temporal domain (phones per second). The results were correlated with the participants’ degree of exposure to foreigners and attitude towards them measured by means of a questionnaire. It was concluded that personal attitude towards interlocutors causes hyperarticulation. It was also shown, however, that the differences between the given instances of conversation are the strongest in the temporal domain, and not in the spectral domain.