Method and Conclusion. See here.
Results. A ratings system was designed in terms of how difficult it would be for an English-language speaker to learn the language. In the case of English, English was judged according to how hard it would be for a non-English speaker to learn the language. Speaking, reading and writing were all considered.
Ratings: Languages are rated 1-6, easiest to hardest. 1 = easiest, 2 = moderately easy to average, 3 = average to moderately difficult, 4 = very difficult, 5 = extremely difficult, 6 = most difficult of all. Ratings are impressionistic.
Time needed. Time needed for an English language speaker to learn the language “reasonably well”: Level 1 languages = 3 months-1 year. Level 2 languages = 6 months-1 year. Level 3 languages = 1-2 years. Level 4 languages = 2 years. Level 5 languages = 3-4 years, but some may take longer. Level 6 languages = more than 4 years.
This post will look at Slavey and Haida in terms of how difficult it would be for an English speaker to learn them.
Slavey, a Na-Dene language of Canada, is hard to learn. It is similar to Navajo and Apache. Verbs take up to 15 different prefixes. All Athabascan languages have wild verbal systems. It also uses a completely different alphabet, a syllabic one designed for Canadian Indians.
Slavey is rated 6, hardest of all.
Haida is often thought to be a Na-Dene language, but proof of its status is lacking. If it is Na-Dene, it is the most distant member of the family. Haida is in the competition for the most complicated language on Earth, with 70 different suffixes.
Haida is rated 6, hardest of all.