Daneman and Case (1981) Taught Children Nonsense Names of Animals

Daneman and Case (1981) taught children nonsense names of animals such as "wugs" and fips." They also taught the children verbs ("pum" and "bem") and forms of the verbs that indicated if the animals were observed by one (i.e., add the suffix "abo") or a group of animals (i.e., add the prefix "aki") . In this study

A) "pumabo" was easier to learn than "akipum."
B) prefixes were easier to learn than suffixes.
C) Slobin's operating principle of "paying attention to the ends of words" was supported.
D) children confused the nouns and verbs and could not distinguish prefixes from suffixes.