Joint PhD in Cognitive Science

Advising Requirement

Each student in the cognitive science program will have two faculty advisors:

1. a Primary Advisor in their home department, who bears primary responsibility for supervising the student's research and dissertation, and
2. a Secondary Advisor in another department and/or discipline of Cognitive Science. One of these faculty advisors (either the primary or secondary) must be affiliated with the Cognitive Science program.

These two advisors, together with other members on thesis committees (as required by the Graduate School and/or home department), will be responsible for conducting and grading the written and oral exams and/or theses proposals and defenses.

These two advisors should be selected within the student's first year of the program. When students ask a faculty member to be their Secondary Advisor, they should discuss the requirements of the Cognitive Science Program with this advisor and ask them to sign the Secondary Advisor Form.

Core Research Competencies Requirement

By the time they graduate, all Cognitive Science PhD students must achieve a degree of professional quality in the following four main research methods in Cognitive Science:

1. Formal methods: Students should demonstrate working knowledge in formal methods, such as neural networks, Bayesian methods, game-theoretic methods, formalization and derivation in different logics, linguistic theory.
2. Programming methods: Students should demonstrate working knowledge of programming methods for cognitive science, such as techniques from artificial intelligence and computer simulation of cognitive models, representations, data structures, and algorithms.
3. Statistical methods: Knowledge in statistical methods and data analysis.
4. Experimental design: Students should demonstrate experience with experimental design, conducting and critiquing experiments, and analysis of experimental outcomes.

Evidence that a student has competency in these four areas of Cognitive Science may be provided in the following ways:

1. Transcripts of previously taken courses in the above areas (either taken at Tufts or taken before beginning the PhD program).
2. Papers authored by students that employ any of the required methods.

Students will send their documentation and/or detailed description for each of these four research methods to both their Primary Advisor and their Secondary Advisor.

In the case that the demonstration is found insufficient and is thus not approved, the student's two advisors will work with the student to suggest ways to obtain sufficient documentation (e.g., by taking courses, writing research papers that demonstrate sufficient preparation, participating in research projects, etc.).

When the student has successfully demonstrated competency in the four main research methods, the Primary and Secondary Advisors should sign the CogSci Grad Advisors Verification Form for the Core Research Methods. This form should be submitted to the Program Administrator. Please submit one form for each core research method.

Written Qualification Requirement: Two papers

1. Students must submit an original research paper describing their research in one area of Cognitive Science, to a peer-reviewed journal by the end of their sixth semester. They should work together with their Primary Advisor to do this. When the paper is submitted, the Primary Advisor should sign the CogSci Grad Advisor Verification Form for the Original Research paper. This form should be submitted to the Program Administrator, Teresa Salvato. A final version of the paper should also be emailed to the Program Operating Director. In addition, this research should be orally presented in public (e.g., as part of a dissertation, a talk as part of a lab meeting, course, or symposium). When the oral presentation paper is given, the Primary Advisor should sign the CogSci Grad Advisor Verification Form for Oral Presentation of Research Paper. This form should be submitted to the Program Administrator. This requirement may overlap with research or a PhD requirement that the student is carrying out in his/her home department.
2. Students must also write another paper, which should be interdisciplinary in nature, that is, covering more than one discipline of Cognitive Science (for example, Psychology & Computer Science; Computer Science & Child Study and Human Development). This paper does not have to be submitted for publication (although this is encouraged). It can be written as part of a course. When this paper is complete, the student should send it to both their Primary and their Secondary Advisor (or an alternative faculty member from the second area of Cognitive Science that is being covered in the paper) for feedback. The student should address any feedback these faculty request. After incorporating this feedback, both faculty should sign the CogSci Grad Advisors Verification Form for the Interdisciplinary paper, confirming that the paper is interdisciplinary in their opinion (e.g. covers two subfields of cognitive science) and meets the requirements of the program. This form, along with the final version of the paper, should be submitted to the Program Administrator.

Teaching Requirement

All students enrolled in the Cognitive Science PhD program are required to teach for one academic year (two semesters). This teaching experience can take the following forms:

1. Serve as a Teaching Assistant for a Tufts undergraduate course.
2. Serve as a primary research mentor for an undergraduate student, such as an undergraduate in the Cognitive and Brain Sciences Major.

After the student has fulfilled this teaching requirement, the Primary Advisor should sign the CogSci Grad Advisor Verification Form for the Teaching Requirement. This form should be submitted to the Program Administrator.

Colloquium Series

All cognitive science students are required to regularly attend the Cognitive Science colloquium series for at least three semesters. Please note that this colloquium series will take place only in the Fall. The colloquium series features speakers from Tufts as well as the Cognitive Science community at large. It has an important educational mission, namely that of exposing students to cutting edge research in Cognitive Science. At the same time, the colloquium series also has an important community-building function by bringing together faculty and students (both graduate and undergraduate) interested in cognitive science, providing an informal setting where students can interact with faculty and ask questions. Ultimately, the goal is for it to become a forum for discussion and exchanges of ideas that can lead to future research collaborations on campus.

All students should make sure that they are on the CogSci mailing list (check with the Program Administrator).

Cognitive Science Graduation Requirements

All Cognitive Science PhD students are required to pass an oral qualification. For Psychology and Child Study and Human Development students, this is either the masters or PhD dissertation proposal. For Education students, this is the PhD dissertation proposal. For Computer Science students, this is the oral qualifying exam.

The PhD examining committee should include a minimum of four members, as specified by the student’s school and home department. It should include the student's Primary Advisor and their Secondary Advisor as well as one member from outside the University.

After the student has written and defended his/her PhD dissertation, the Primary and Secondary advisors should sign the CogSci Grad Advisors Verification Form for the Dissertation. This form should be submitted to the Program Administrator.

A minimum of 11 courses is required for a student to graduate with a Cognitive Science PhD. Four of these courses are Core Courses, and 7 of these courses are Electives. Some of these requirements may overlap with the requirements of the student’s home department.

Core Courses

All Cognitive Science students must take all four core courses listed. These are non-transferrable. These four core courses represent four foundational fields in Cognitive Science: philosophy, computer science, neuroscience, psychology and linguistics. These courses (or one of the alternative options for them) will be offered regularly at least once every 2 years. Students must take them when they are offered, to prevent running into scheduling problems later.

1. Philosophical Foundations of Cognitive Science: PHIL 191 (Fall) and PHIL 192 (Spring)
   This course covers many current issues in the philosophy of mind (functionalism, emergence, computationalism, supervenience, etc.) and philosophy of science (reductionism, theory, models, causation, explanation). Instructor: Epstein.
2. Computational Models in Cognitive Science: COMP 134
   Introduction to computational modeling in various subfields of cognitive science (e.g., symbolic and neural network models, artificial life and agent-based models, dynamical systems models). Instructor: De Ruiter.
3. Cognitive Psychology and Neuroscience: PSY 231  or PSY 232
   PSY 231: Introduction to neural mechanisms underlying cognition (including brain physiology, neurons and neural pathways, chemical and electrical mechanism). Instructor: Race.
   PSY 232: Introduction to cognition and behavior (including cognitive phenomena and functions, architectures, language, memory, etc.). Instructor: Thomas.
4. Cognitive Science of Language and Communication: PSY 212 or PSY 251
   PSY 212: Introduction to the cognitive science of human communication, including verbal (language), multimodal (e.g., gesture) and nonverbal communication. Instructor: De Ruiter.
   PSY 251: Introduction to the cognitive principles and architecture of language. Instructors: Goldberg, Kuperberg.

Electives

To graduate with a PhD in Cognitive Science, students must take at least 7 elective courses in total.

Electives within the student's Home Discipline

Three of the elective courses can be taken within the student’s home discipline and are managed by the student’s home department. These courses should cover an area of Cognitive Science that is directly beneficial to the student’s research and should be discussed directly between the student and their Primary Advisor. Transfers for these courses are managed by the home department. Tracking of these courses are managed by the home department.

Interdisciplinary Electives

At least four of the elective courses should cover areas of Cognitive Science that are outside those traditionally covered by the student's home department. These four courses can constitute any combination from the following three groups:

1. COGS Interdisciplinary Courses, selected from the list below. These are courses that receive an explicit preface of COGS. To be designated as a COGS course, the CogSci Steering Committee votes that this course is interdisciplinary in nature, covering at least two core disciplines within Cognitive Science. No transfers are permitted.
2. Approved courses that are offered outside the student's home department. These courses have all been approved by the CogSci Steering Committee. A student can petition to transfer up to two of these courses from another University, following these guidelines for transfer.
3. By petition only. Students can petition to include any other course offered at Tufts that enables the student to gain competency in a topic related to their Cognitive Science research, allowing them to carry out interdisciplinary research. Please note: the student must have their advisor's and their instructor's approval to take the course before submitting the petition. No transfers are permitted for these petitioned courses. In order to petition to have a course count towards their CogSci electives, the student should complete this form.

COGS Interdisciplinary Courses

PSY 248/COGS 248: The Predictive Mind
PSY 210/COGS 210: Introduction to Computer Programming in Psychology
COMP 150/COGS 193: Ethics for AI, Robotics and Human Interaction
COMP 150/COGS 293: Human-Robot Interaction
COMP 150: EXM Experimental Methods for Computer Scientists