SUPERVISION OF COMPLETED Ph.D. STUDENTS (by graduation year)
2022
Larissa Goulart: Communicative text types in university writing.
Co-Chairs: Randi Reppen, Doug Biber; Members: Jesse Egbert, Bethany Gray (Iowa State)

2021
Ethan Lynn: The linguistic nature of ESL/EFL reading books.
Co-Chairs: Jesse Egbert Randi Reppen; Members: Doug Biber, Vedran Dronjic, Yuly Asención Delaney (Spanish).

2020
Scott Stockton: A corpus-based analysis of junior and senior high school English textbooks in Japan
Co-Chairs: Jesse Egbert, Randi Reppen; Members: Doug Biber, Yuly Asención Delaney (Spanish).

2019
David Gasbarro Tasker: Situational and linguistic variation in undergraduate English department student writing
Co-Chairs: Randi Reppen, Doug Biber; Members: Jesse Egbert, Vedran Dronjic, Bethany Gray (Iowa State University).

2018
Jersus José Colmenares López: Data driven learning: Evidence from Spanish as a foreign language (Ph.D. Curriculum and Instruction).
Co-Chairs: Louise Lockard and Randi Reppen; Members: Norbert Francis, Richard Brown, John McClure.

Meishan Chen: A comparison of the situational and linguistic features of high-profile criminal trials and TV series courtroom trials
Co-Chairs: Doug Biber, Randi Reppen; Members: Bill Crawford, Edward Finegan (University of Southern California)

Elnaz Kia: Directive use in university classroom discourse: Variation across disciplines, academic levels and interactivity
Co-Chairs: Doug Biber and Randi Reppen; Members: Jesse Egbert, Yuly Asención-Delaney (Spanish)

Nicole Brun Mercer: Nations united through discourse: A corpus analysis of UN General Assembly addresses.
Co- Chairs: Doug Biber, Randi Reppen; Members:  Bill Crawford, Steve Wright (Political Science)

2017
Anna Gates-Tapia: Definitions in university-level business management textbooks
Co-chairs: Douglas Biber, Randi Reppen; Members: Fredricka Stoller, Yuly Asención-Delaney (Spanish)

Erin Schnur: Structural and functional characteristics of English for Academic Purposes (EAP) and authentic lectures
Co-chairs: Douglas Biber, Randi Reppen; Members: Bill Crawford, Jesse Egbert, Shelley Staples (University of Arizona)

2014
Shelley Staples: Linguistics characteristics of international and U.S. nurse discourse
Co-chairs: Douglas Biber, Randi Reppen; Members: Okim Kang, Jay Shen (University of Nevada, Las Vegas)

2013
Dongmei Cheng: Student-instructor apologies: How are they produced and perceived?
Co-chairs: Mary McGroarty, Randi Reppen; Members: Okim Kang, Jim Wilce (Anthropology).

2012
Mansoor Al-Surmi: Authentic ESL spoken materials: Soap opera and sitcom versus natural conversation  
Chair: Randi Reppen; Members: Douglas Biber, Bill Crawford, Karina Collentine (Modern Languages)

Donald Miller: Lexical variability in required undergraduate reading
Co-Chairs: Douglas Biber, Randi Reppen; Members: Bill Grabe, Fredricka Stoller, Yuly Asención Delaney (Modern Languages)

Jonathan Smart: Innovative approaches to ESL grammar instruction
Co-Chairs:  Bill Crawford, Randi Reppen; Members: Doug Biber, Joe Collentine (Modern Languages)
First position after graduation: Visiting Professor, English Department, Northern Arizona University

2009
Erkan Karabacak: Unplanned terminology development: A synchronic and diachronic study on economic terms in Turkish newspapers
Co-Chairs: Doug Biber, Randi Reppen; Members: Mary McGroarty, Dan Li (Computer Science)

Angkana Tongpoon: The effects of concordancing on second language vocabulary learning
Chair: Randi Reppen; Members: Douglas Biber, Bill Grabe, Linda Shadiow (Educational leadership).

2008
Ericson Friginal: The language of outsourced call centers: A corpus-based study of cross-cultural communication.  
Co-chairs: Doug Biber, Randi Reppen; Members: Mary McGroarty, James Pinto (Business).

Heidi Vellenga: Instructional effectiveness and interlanguage pragmatics.
Chair: Randi Reppen; Members: Susan Fitzmaurice (Sheffield University, Sheffield, UK), Mary McGroarty, Lourdes Ortega (University of Hawai’i at Mānoa).

2004
Paulo Marques Quaglio: The language of NBC’s Friends: A comparison with face-to-face conversation.
Co-chairs: Douglas Biber, Randi Reppen. Members: Susan Fitzmaurice, Alfredo Urzúa (Old Dominion University)


COMMITTEE MEMBER for Ph.D. STUDENTS (by graduation year)
2023
Margaret Wood: Communcative function and linguistic variation in state statutory law.
Chairs: Doug Biber & Jesse Egbert; Members: Randi Reppen, Thomas R. Lee, J.D. 

Boniesta Melani: (U of Central FL)  An Exploratory Study of the Frequency of Idioms Found in Written and Spoken Academic Corpora.
Chair: Keith Folse; Members: M. H. Clark, Beth Young, Randi Reppen 

2022
Daniel Dixon: The language in digital games: Register variation in virtual and real-world contexts.
Chair: Jesse Egbert; Members: Doug Biber, Bill Crawford, Randi Reppen, and Jonathon Reinhardt (U of AZ)

Tülay Örücü Dixon: Rules of academic writing: A synchronic and diachronic analysis across the disciplines.
Co-Chairs: Doug Biber, Bill Crawford. Members:  Jesse Egbert, Randi Reppen, Jay Jordan (U of Utah)

2021
Jessica Coronado-Verdugo: Analysis of an English for business purposes reading curriculum: A case stdy in an Mexican University.
Chair: Louise Lockard. Members: Gretchen Francis McAllister, Randi Reppen, José Luis Moreno Vega​.

2020
Carolina Zuppardi: Collocation dimensions in academic English. (Catholic University Sao Paulo Brazil).
Chair: Tony Berber Sardinha. Members: Doug Biber, Jesse Egbert, Randi Reppen.  

Danilo Duarte Costa: A corpus-based investigation of the language of Chemistry and Physics Textbooks and its implications for English for reading.  (Federal University of Minas Gerais, Brazil).
Chair Deise P. Dutra; Members: Randi Reppen, Valdênia de Carvalho e Almeida, Leonardo Pereira Nunes, Luciana de Oliveira Silva.

Brett Hashimoto: Describing the language experience of university students.
Chairs: Jesse Egbert and Doug Biber.  Members: Randi Reppen Dan Dewey (BYU).  

Bo Maxwell Stevens: Interdisciplinary Data Science Perspectives between Biology and Linguistics.
Chair: Nancy Collins Johnson.  Members: Derek Sonderegger, Chris Doughty, Randi Reppen.

2018
Meixiu Zhang: Investigating Native and Target Language Use in Collaborative L2 Writing.
Chair: Bill Crawford; Members: Doug Biber, Randi Reppen, Lisa Persinger (Educational Psychology).

2017
Romy Ghanem: Non-native speakers' alignment of linguistic features with different interlocutors.
Chair: Okim Kang; Members: Doug Biber, Randi Reppen, Lucy Pickering (Texas A&M Univeristy- Commerce).

2016
Heidi Wright: Linguistic and Structural Analyses of Stand-Alone Literature Reviews: Seventy-Five Years of Change
Co-Chairs: Doug Biber, Fredricka Stoller; Members: Randi Reppen, Yuly Asencion (Global Languages and Cultures)

2015
Seonmin Park: Methodology for a reliable academic vocabulary list
Chair: Doug Biber; Members: William Grabe, Luke Plonsky, Randi Reppen; Brent Burch (Statistics)

Adnan Ajšić: Language ideologies, public discourses and ethnonationalism in the Balkans: A Corpus-based study.
Co-Chairs: Doug Biber, Mary McGroarty; Members: Randi Reppen, Jim Wilce (Anthropology)

2014
Jesse Egbert: Reader perceptions of linguistic variation in published academic writing
Chair: Douglas Biber; Members: Randi Reppen, William Grabe, and Mark Davies (Brigham Young University)

2011
Bethany Gray: Exploring academic writing through corpus linguistics: When discipline tells only part of the story
Chair: Douglas Biber; Members: Bill Grabe, Randi Reppen, Viviana Cortes (Georgia State University), Susan Conrad (Portland State University)

2009
Jack Grieve: A Corpus-Based Regional Dialect Survey of Grammatical Variation in Standard Written American English
Chair: Doug Biber; Members: Bill Crawford, Randi Reppen, Ruihong Huang (Geography).

Gina Iberri-Shea: University student public speech: Language variation in classroom contexts.
Chair: Doug Biber; Members: Mary McGroarty; Randi Reppen, Laura Umphrey (Communication).

Eun Hee Jeon: Effects of repeated reading on L2 reading fluency and comprehension
Chair: Bill Grabe; Members: Mary McGroarty, Randi Reppen, Fredricka Stoller, Heidi Wayment (Psychology)

2008
Federica Barbieri: Involvement in university classroom discourse.
Chair: Doug Biber; Members: Mary McGroarty, Randi Reppen; James Wilce (Anthropology).

Nicole Tracy-Ventura: Development readiness and tense/aspect: An instructional study of L2 preterit and imperfect acquisition in Spanish.
Chair: Mary McGroarty; Members: Doug Biber, Kim McDonough, Randi Reppen; Joe Collentine (Modern Languages).

2006
Estela Ene (University of Arizona): The last stages of second language acquisition:: Linguistic evidence from academic writing by advanced
​non-native English speakers. Chair: Linda Waugh; Members: Muriel Saville-Troike, Douglas Adamson, Jun Liu, Randi Reppen.
​
2003
Mary Katherine MacKinnon: Technologies, teacher, and texts: Negotiating English-as-a-foreign-language writing in two Taiwanese classrooms.
Chair: Mary McGroarty; Members: Sibylle Gruber, Lourdes Ortega, Randi Reppen, Frances Riemer (Education)

2002
Viviana Cortés: Lexical bundles in academic writing in history and biology.
Chair: Douglas Biber. Members: Mary McGroarty, Randi Reppen, English; Linda Shadiow, (College of Education)



EXTERNAL EXAMINER
Norhakimah Khaiessa Binti Ahmad, University Putra, Malaysia  Fall 2019
Yuying ZHI, University of Hong Kong ZHI Yuying  Sept 2019
Tove Larsson, Uppsala University, Sweden, Winter 2016
Seyed Ali Rezvani Kalajahi,  University Putra, Malaysia, Fall 2014
Elaine Riordan, University of Limerick, Ireland, April 2013