In four recent experiments we have seen that a long reverberation time (RvT) may improve, rather than impair, comprehension and recall of spoken words or texts for participants who have limited language skills. A long RvT improved, rather than impaired, comprehension for Swedish pupils with a low proficiency in English reading when taking a grade 9 English listening comprehension test in their classroom. For those who were good at reading English there was a better recall with a short RvT. This crossover antagonistic interaction was replicated with Swedish college students grouped by their English proficiency reading skills. In two word list experiments with Swedish pupils in grade 4 and college students, English and Swedish words were presented with a long and short RvT and crossed with two signal-to-noise ratios. Also here there were indicators of a crossover interaction to the effects that along reverberation time improved, rather than impaired, the recall of the words for students that were on the low side of English language proficiency. Possible explanations will be discussed in the presentation.