The acquisition of plural marking in English and German revisited: Schemata versus rules. Köpcke, K. J Child Lang, 25(2):293-319, 1998.
abstract   bibtex   
This article contributes to a debate in the linguistic and psychological literature that centres around the representation of morphologically complex words in the grammar and in the lexicon. The issue is whether inflectional morphology is rule-based (i.e. symbolically represented), or whether the assumption of pattern association is more adequate to account for the facts. On the basis of the analysis of acquisitional data the article strongly argues for the latter alternative. In a classic experiment that helped shape the development of acquisition theory Berko (1958) reported substantial support for ITEM-AND-PROCESS rules in the acquisition of plural morphology in English. A large part of her results were zero responses (repetition of the stimulus). A reinterpretation of these zero responses in light of schema theory and the cue strength hypothesis shows a striking departure from randomness. Berko's subjects tended to repeat stimuli just to the extent that these already resembled a plural schema. A reinterpretation of data reported in Innes (1974) achieved compatible results. This data set is far more extensive than Berko's and is used in the present study to put the schema model to a more stringent test. A reinterpretation of a parallel experiment with German children, using the cue strength analysis of the more complex plural morphology of German yielded parallel results. Finally, natural acquisitional data obtained from seven German speaking children aged between 2;1 and 2;9 are analysed. Again, strong support is found for the schema model. It is suggested that a schema-learning mechanism may underlie the acquisition of morphology, even when the end product of the learning process involves item-and-process rules, as in the case of English plural formation. In a schema-learning model, the child builds schematic representations for possible singular and plural lexical items as whole gestalts, and attempts to map concrete forms onto these schemata in deciding whether the forms have singular or plural value.
@Article{Kopcke1998,
  author   = {KM K\"opcke},
  journal  = {J Child Lang},
  title    = {The acquisition of plural marking in {E}nglish and {G}erman revisited: {S}chemata versus rules.},
  year     = {1998},
  number   = {2},
  pages    = {293-319},
  volume   = {25},
  abstract = {This article contributes to a debate in the linguistic and psychological
	literature that centres around the representation of morphologically
	complex words in the grammar and in the lexicon. The issue is whether
	inflectional morphology is rule-based (i.e. symbolically represented),
	or whether the assumption of pattern association is more adequate
	to account for the facts. On the basis of the analysis of acquisitional
	data the article strongly argues for the latter alternative. In a
	classic experiment that helped shape the development of acquisition
	theory Berko (1958) reported substantial support for ITEM-AND-PROCESS
	rules in the acquisition of plural morphology in English. A large
	part of her results were zero responses (repetition of the stimulus).
	A reinterpretation of these zero responses in light of schema theory
	and the cue strength hypothesis shows a striking departure from randomness.
	Berko's subjects tended to repeat stimuli just to the extent that
	these already resembled a plural schema. A reinterpretation of data
	reported in Innes (1974) achieved compatible results. This data set
	is far more extensive than Berko's and is used in the present study
	to put the schema model to a more stringent test. A reinterpretation
	of a parallel experiment with German children, using the cue strength
	analysis of the more complex plural morphology of German yielded
	parallel results. Finally, natural acquisitional data obtained from
	seven German speaking children aged between 2;1 and 2;9 are analysed.
	Again, strong support is found for the schema model. It is suggested
	that a schema-learning mechanism may underlie the acquisition of
	morphology, even when the end product of the learning process involves
	item-and-process rules, as in the case of English plural formation.
	In a schema-learning model, the child builds schematic representations
	for possible singular and plural lexical items as whole gestalts,
	and attempts to map concrete forms onto these schemata in deciding
	whether the forms have singular or plural value.},
  keywords = {Child, Child Language, Preschool, Comparative Study, Female, Germany, Human, Language Development, Learning, Male, Phonetics, 9770909},
}

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