American Speech-Language-Hearing Association

Research Databases and Other Online Tools

The following online databases and other tools are helpful for literature searches, experiment preparation, and more.

Literature Searching

Free Access

PubMed: National Library of Medicine database of biomedical literature citations from MEDLINE, life sciences journals, and online books

PubMed Central: Searchable, full-text archive of biomedical and life sciences journal literature; includes final peer-reviewed journal manuscripts that arise from NIH funds, per the NIH Public Access Policy.

ERIC: U.S. Department of Education database of education-related literature, including journal articles, conferences, government documents, reports, books, and bibliographies

Google Scholar : Search the Web for peer-reviewed papers, theses, books, preprints, abstracts, and technical reports from broad areas of research.

Scirus: Search the Web for journal content, scientists' homepages, courseware, pre-print server material, patents, and institutional repository and website information.

Subscription Required

Check with your library for access.

CINAHL: Database of nursing and allied health journals

The Cochrane Library: A collection of seven evidence-based medicine databases

ComDisDome: Database of communication sciences and disorders books and journal articles

Communication and Mass Media Complete: Communication journals and books from the CommSearch database from the National Communication Association

Linguistics and Language Behavior Abstracts: Database of journal articles, books, book chapters, dissertations, and book review citations covering phonetics, phonology, morphology, syntax, and semantics

MEDLINE: Database of biomedical journals

PsycINFO: Database of psychology journal articles, book chapters, books, and dissertations

Science Direct: Database of science, technology and medicine journal articles and book chapters

Web of Science, Science Citation Index, and Social Science Citation Index: Databases of all cited references captured from indexed articles

Experiment Preparation

Lexical Databases

ARC Nonword Database: Macquarie University. Database of non-words and pseudo-homophones, including neighbor values, bigram/trigram frequency, and more

CELEX: Max Planck Institute for Psycholinguistics. Lexical database including frequency, orthography, phonology, morphology, and syntax

Child Mental Lexicon Calculator: Holly Storkel, Word and Sound Learning Lab, University of Kansas. Calculate phonotactic probability and neighborhood density based on child corpora of spoken American English

Cross-Linguistic Easy-Access Resource for Phonological and Orthographic Neighborhood Densities (CLEARPOND): Northwestern Bilingual and Psycholinguistics Laboratory. Calculate and search by phonological and orthographic neighborhood information within and between five languages: Dutch, English, French, German, and Spanish

English Lexicon Project Website: David Balota, the Cognitive Psychology Laboratory, Washington University in St. Louis. Lexical database, along with behavioral data from visual lexical decision and naming studies

International Picture Naming Project: Center for Research in Language, University of California, San Diego. Picture stimuli with naming norms in seven languages, searchable by lexical parameters as well as percent name agreement, reaction time, and visual complexity

IPhOD: Irvine Phonotactic Online Dictionary: Kenny Vaden, Department of Cognitive Science, University of California, Irvine. Provides phonotactic probability, neighborhood density values, and phonologic neighbors for words and nonwords, and finds words within user-specified criteria ranges

Lexical Development Norms: Macarthur-Bates Communicative Development Inventories. Norms on word comprehension and production for children 8–30 months of age

MC Word: An Orthographic Wordform Database: Language Imaging Laboratory, Medical College of Wisconsin. Calculate orthographic neighborhood frequencies and generate lists of nonwords

Phonotactic Probability Calculator: Michael Vitevitch, Spoken Language Laboratory, University of Kansas. Calculate the frequency with which phonological segments occur in a given position in a word

University of South Florida Free Association Norms: The largest database of free association ever collected in the United States

USENET: Westbury Lab, University of Alberta. Orthographic word frequencies collected between 2005 and 2006

Speech & Hearing Lab Neighborhood Database: Mitchell Sommers, Washington University in St. Louis. Information on orthographic and phonologic targets, including orthographic and phonologic neighborhoods (based on Pisoni’s Hoosier Mental Lexicon Database; Nusbaum, Pisoni, & Davis, 1984)

WordNet: Princeton University. Search nouns, verbs, adjectives, and adverbs by meaning

Wordplay: State University of New York Geneseo. Search words by length, frequency, string match, spoken frequency (based on Pastizzo & Carbone, 2007), and USF Free Association Norms.

Shared Data Sets

The Epidemiology of Specific Language Impairment (SLI): Child Language Research Center, University of Iowa. Data from a large epidemiologic study of SLI in 5-year-old children; must register for data access

The Fromkin Speech Error Database: Max Planck Institute for Psycholinguistics. Corpus of speech errors coded by error type, process procedure, and process direction

Moss Aphasia Psycholinguistics Project Database: Moss Rehabilitation Research Institute (MRRI). Database of experimental behavioral data from persons with aphasia

NICHD Study of Early Child Care and Youth Development (SECCYD): Data from longitudinal study about the relationships between child care experiences, child care characteristics, and children's developmental outcomes; must apply for data access

Rehabilitation Dataset Directory, Center for Rehabilitation Research using Large Datasets (CRRLD): Helps identify potential secondary sources of large-scale datasets

TalkBank: coordinated by Brian MacWhinney, Carnegie Mellon University. Shared databases of recordings and coded transcripts within subfields studying communication, including aphasia, Child Language Data Exchange System (CHILDES; includes CHAT, transcription guidelines for language acquisition data, and CLAN, programs to analyze the data), conversational analysis, dementia, phonological and phonetic analysis, second language acquisition, and traumatic brain injury (TBI).


Community of Science Pivot: Database for finding funding, promoting your work, identifying experts, managing resources, and collaborating with colleagues (must be affiliated with an institution that subscribes; free trial available)

The CMU Pronouncing Dictionary: Carnegie Mellon University. Transcribes text into machine-readable ARPAbet symbols

Mix and Match: Maarten van Casteren, Medical Research Council, Cognition and Brain Sciences Unit. Pseudo-randomize stimuli and match the conditions of factorial experiment

MTurk: Online data gathering tool run by Amazon

NIH Toolbox: A standard set of measures assessing cognitive, emotional, motor and sensory function from ages 3-85

Phonetic Transcription: Transcribes text into International Phonetic Alphabet (IPA) or other phonetic alphabets

Patient Reported Outcomes Measurement Information System (PROMIS), NIH: Reliable, precise measures of patient–reported health status for physical, mental, and social well–being

SurveyMonkey: Online data gathering tool (basic service requires registration, but is free of charge)

Text to Speech: Turns text into speech with options to modulate speed, pitch, dialects, and more

Zotero: Collect, organize, cite, and share your research sources with this free, downloadable web browser tool. See MIT Libraries for helpful Zotero training materials.

If you would like to suggest an additional research database or other online tool for us to consider adding to this page, please let us know at

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