In 2 experiments, the authors examined whether spellings improve students' memory for pronunciations and meanings of new vocabulary words. Lower socioeconomic status minority 2nd graders (M ϭ 7 years 7 months; n ϭ 20) and 5th graders (M ϭ 10 years 11 months; n ϭ 32) were taught 2 sets of unfamiliar nouns and their meanings over several learning trials. The words were defined, depicted, and embedded in sentences. During study periods, students were shown written forms of 1 set but not the other set. Spellings were not present during word recall. Results of analyses of variance showed that spellings enhanced memory for pronunciations and meanings compared to no spellings ( ps Ͻ .01). Better readers and spellers increasingly outdistanced poorer readers and spellers in remembering pronunciations over trials when spellings accompanied learning ( p Ͻ .05), suggesting a Matthew effect. An explanation is that spellings activated graphophonemic connections to better secure pronunciations and meanings in memory. Results indicate that orthographic knowledge benefited vocabulary learning and diminished dependence on phonological memory. Instructional implications are that teachers should include written words as part of vocabulary instruction and that students should pronounce spellings as well as determine meanings when they encounter new vocabulary words.

An experiment with random assignment examined the effectiveness of a strategy to learn unfamiliar English vocabulary words during text reading. Lower socioeconomic status, language minority fifth graders (M = 10 years, 7 months; n = 62) silently read eight passages each focused on an unknown multi-syllabic word that was underlined, embedded in a meaningful context, defined, depicted, and repeated three times. Students were grouped by word reading ability, matched into pairs, and randomly assigned to one of two conditions. In the strategy condition, students orally pronounced the underlined words during silent reading. In the control condition, students penciled a check if they had seen the underlined words before but did not say the words aloud. Results of ANOVAs showed that the oral strategy enhanced vocabulary learning (ps \ .01), with poorer readers showing bigger effect sizes than better readers in remembering pronunciation-meaning associations and spellings of the words. In a second experiment, 32 fifth graders from the same school described the strategies they use when encountering unfamiliar words in context. Better readers reported more word-level strategies whereas poorer readers reported more text-based strategies. Our explanation is that application of the word-level strategy of decoding new words aloud strengthened connections between spellings, pronunciations, and meanings in memory compared to silent reading of new words, particularly among poor readers who were less skilled and less likely to use this strategy unless instructed to do so.

Vocabulary learning is central to reading ability and academic achievement. Vocabulary researchers and educators have viewed its essence as a process of associating the pronunciations and meanings of words in memory, and they have paid little attention to the contribution that spellings might make to vocabulary learning. We review theory and evidence showing that this is a serious oversight. Once children become literate, they retain the spellings of words bonded to their pronunciations and meanings in memory. Several studies show that spellings of words are retained in memory and influence phonemic and syllabic segmentation of words, they enhance memory for pseudowords, and they impact the detection of oral rhyming words. Two studies show that exposing second and fifth graders to the spellings of new vocabulary words enhances their memory for pronunciations and meanings of the words. Students with better developed orthographic knowledge benefit more from spellings in learning vocabulary words than students with weaker knowledge. In fact, the detection of a Matthew effect suggests that differences in orthographic knowledge create a difference in vocabulary size that grows increasingly large over time. Findings carry implications for enhancing vocabulary learning and instruction. Teachers need to show the spellings of new vocabulary words when they discuss their meanings. Students need to stop and pronounce unfamiliar words rather than skip them during independent reading. Researchers need to incorporate orthography into their theories explaining vocabulary acquisition, specifically phonological working memory theories, and they need to attend to its influence in studies they conduct.

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