In three experiments, this study addressed two basic questions about the detection of multiletter patterns: (1) How is the detection of a multiletter pattern related to the detection of its individual components? (2) How is the detection of a sequence of letters influenced by the observer's familiarity with that sequence? (Author/BW)

In three experiments, subjects read passages and circled misspelling in them. Results support the unitization hypothesis that common words are normally read in units larger than letters but are read in letter units when misspelled. (Author/CP)

Four experiments investigated the phenomenon of letter migration, the tendency of readers to assign letters from one word to another appearing in close proximity. The experiments, which involved college undergraduate students, revealed several properties of letter migration, including the following: (1) migrations are more frequent when the words…

Two experiments examined the perceptual processing of letters embedded within one- and two-syllable words and visually similar nonwords. Results suggest that (1) the size of compelling perceptual units seems limited, and (2) unit size is not necessarily related to the correspondence between letter order and pronounceability. (Author/BW)

In two experiments, a probe technique required subjects to respond when the digit 7 appeared in one of five-letter positions in words or nonwords, inserted at the onset and 500 msec after letter and word processing. The focus of attention given to a letter has a smaller spatial extent. (Author/CM)

Reaction time and accuracy do not always reflect the same perceptual processes; therefore, the convergence of reaction time with accuracy within the context of a specific information processing model should be demonstrated empirically rather than assumed a priori. (Author/PN)

Familiar letter sequences in noncued portions of a tachistoscopic display were shown to reduce accuracy of partial report. Findings suggest that familiarity may automatically direct attentional resources to a particular spatial region. Such attentional capture may be disruptive if the material is presented at another location. (Author/RD)

The duration and timing of the context is which letters occur is shown to influence the perceptibility of the target in experiments demonstrating that early on enhanced word presentations and pronounceable-pseudoword contexts increase letter perceptibility. The perceptibility of letters in strings sharing several or few letters with words is…

Experiments with 81 college students and 48 fifth graders investigated the role of one form of intra-word orthographic redundancy--the characteristic asymmetric spatial distributions of letters of the alphabet across serial positions within words. Adults were sensitive to letter positional distributions, as were fifth graders who were good…

Experiments tested the predictions that words are perceived more accurately in strongly constraining word contexts than in weakly constraining word contexts, and that a strong perceptual advantage would be present for letters in words vs. letters alone or in unrelated-letter strings. Several alternative theories of word perception are discussed.…

High frequency words typed in normal and alternating case were presented tachistoscopically in the fovea and parafovea to children and adults. Dependent measures were percentages of letters and words correct. Few differences between age groups were found. Serial position curves also showed similarities across grades in the parafoveal information…

A study assessed the role of orthographic structure in college students' perceptual recognition and judgment of letter strings. Lexical status, word frequency, bigram frequency, log bigram frequency, and regularity of letter sequencing were orthogonally varied across a series of experiments. Six-letter words and their anagrams were used as test…

Three experiments report additional evidence that it is a mistake to account for all interletter effects solely in terms of sensory variables. These experiments attest to the importance of structural variables such as retina location, array size, and ordinal position. (Author/PN)

Orthographic context and visual letter information were independently varied in a letter recognition task. The results contradicted the qualitative predictions of nonindependence theories of reading and are accurately described by a quantification of independence theory. (Author/CP)

Schuberth and Eimas (EJ 159 939) reported that context and frequency effects added to determine reaction times in a lexical decision (word v nonword) task. The present reexamination shows that context and frequency do interact, with semantic context facilitating the processing of low-frequency words more than high-frequency words. (Author/CP)