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Center on Human Development and Disability

CHDD is located on the Lake Washington Ship Canal

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Core Services





Behavioral Evaluation Center

Formerly Behavioral Science Core
child and adult in play session  researcher coding video with Mangold software  parent and child    

Raphael Bernier
Raphael Bernier, Ph.D.


Core Services

The Behavioral Evaluation Center (BEC), operated by the Administrative Core, provides CHDD behavioral scientists access to four types of services to support human studies:

(1) a Behavior Observation Laboratory (BOL);

(2) an Eye Gaze Tracking facility;

(3) a behavioral testing consulting service; and

(4) a coordination service for access to UCEDD databases for research.

Services and Facilities

Devon Bacon
Devon Bacon
Technical Coordinator

Contact Devon Bacon 206-685-9728 for more information regarding the BEC observation rooms or Mangold INTERACT.

Behavior Observation Laboratory

Four observation rooms are available for behavioral evaluation and phenotyping for use by CHDD behavioral scientists.  These facilities are designed to capture and measure a wide array of behaviors, ranging from mother-infant interaction to frame-by-frame analysis of facial expressions. We adapt these recording systems to individual investigators’ needs and provide training, software, and hardware necessary for designing and conducting behavioral research. The studios are equipped with two wall mounted cameras located in each room with pan-tilt-zoom functions controlled remotely in an adjoining room to allow following free roaming subjects or zoom in for close-ups in staged experiments.

The Mangold Coding and statistical system is also a key feature of our video recording facilities. Specifically, Mangold INTERACT allows an investigator to compile a timeline of behavioral events that occur in a video recording of subjects during a scripted play scenario. The video is played back in Mangold INTERACT, and the researcher codes the behavior by attaching markers to time points or intervals where the parent and/or child exhibit behavioral states that are relevant to the experimental design of the study. These markers link the time of these events to specific categories of behavior specified by the researcher. The progression of behavior can be categorized either as a sequence of behavioral states sampled at regular time intervals, or as a sequence of irregular events when behavior transitions from one category to another. The end result of the coding process can be visualized in a number of ways, ranging from spreadsheets containing the entire sequence of coded intervals, to plots and statistics summarizing the temporal properties of the behaviors and interactions between them.

Core staff also developed a co-registration process that integrates these behavioral data with the BIOPAC system supported by the Human Electrophysiology Component of the Brain Imaging Core. This system consists of several compact hardware modules that acquire and digitize electrical signals from sensors attached to a research study participant. Each module is specialized for particular modalities, including electrocardiogram, electrodermal responses, impedance cardiography, and respiratory pneumography. A specialized module receives digital trigger signals generated by experimental control systems, such as stimulus delivery software, or (in this case) video recorders. A central acquisition unit gathers outputs from these various modules and delivers them to a software application, AcqKnowledge, that generates a coordinated real-time display of incoming data, and saves these data for subsequent post-acquisition signal processing and analysis.

Eye Gaze Tracking Facility

The BEC operates two Eye Gaze Tracking facilities. One system is available in the CHDD South Building (SB207). Recordings are made using the Tobii TX 300 remote eye tracking system using infrared cameras in conjunction with infrared illuminators. The system is completely non-intrusive and does not require the subject to wear any equipment.

The EEG Lab is equipped with a 128-channel dense array electroencephalography (EEG) recording system (Net Amps 400; Electrical Geodesics Inc., Eugene, OR) that allows researchers to measure neural activity in response to a variety of visual and auditory stimuli. Data collection is accomplished through an interconnected group of computers and amplifiers. Visual and auditory stimuli are presented using E-Prime 2.0 (Psychology Software Tools) or MatLab (Natick, MA). Simultaneously, EEG signals are filtered, digitized, and acquired using Net Station 4.5 (Electrical Geodesics Inc.). There are two software packages available for co-registration and source localization analysis: EMSE user suite (Source Signal Imaging, San Diego, CA) and BESA 5.1 (MEGIS Software, Germany), which includes software that can integrate MRI images with ERP data. In addition to the EEG system, a Smart Eye Pro 5.0 eye-tracking system (Smart Eye Inc., Sweden) is also located within the laboratory. The eye-tracking system is fully integrated with the EGI hardware and software suite, providing real-time measurement of visual attention recorded concurrently with EEG.

Behavioral Testing Consulting Service

This service provides a central resource for Research Affiliates and their staff to receive consultation and training on behavioral tests for behavioral phenotyping and outcome studies. Coordination of use of CHDD clinical space for outcome studies is also part of this service. Consultation on test reliability, validity, feasibility, and any adaptations needed for individuals with IDD is provided. Resources of the BEC include materials and technical expertise in assessment in the domains of cognitive, achievement, and adaptive abilities; memory and language functioning; attention and executive functioning skills; motor development and visual perception; and mood and personality (see partial list below).

Specific expertise in the gold standard diagnostic assessment tools of autism spectrum disorders (ASD) is also provided. This service provides consultation and support regarding the selection of behavioral and neurocognitive measurement tools as well as training and supervision of the administration of evaluative assessments. Supervision and support regarding the presentation of clinical findings and feedback to research participants, including written evaluation reports to be used for educational and treatment planning also is provided.

The most common behavioral tests available in the BEC library are listed below.

Cognitive Batteries

Wechsler Intelligence Scale for Children, Wechsler Abbreviated Scales of Intelligence, Wechsler Preschool and Primary Scale of Intelligence, Wechsler Adult Intelligence Scale, Mullen Scales for Early Learning, Differential Ability Scales, Stanford Binet Intelligence Scales, Raven Progressive Matrices, Leiter International Performance Scale, Battelle Developmental Inventory, Woodcock Johnson Tests of Cognitive Abilities

Adaptive Behavior Assessments

Vineland Adaptive Behavior Scales, Adaptive Behavior Assessment Scale

Autism Related Diagnostic Measures and Tools

Autism Diagnostic Observation Schedule, Autism Diagnostic Interview, Social Communication Questionnaire, Social Responsiveness Scale, Repetitive Behavior Scale, Communication and Symbolic Behavior Scales, Autism Observation Scale for Infants, Autism Quotient, Broader Autism Phenotype Questionnaire, Early Social Communication Scales, Brief Infant Toddler Social Emotional Assessment, Checklist for Autism in Toddlers, Screening Tool for Autism in Toddlers, Social Skills Rating System

Language Measures

Comprehensive Assessment of Spoken Language, Peabody Picture Vocabulary Test, Expressive Vocabulary Test, Clinical Evaluation of Language Fundamentals, Oral and Written Language Scales, Comprehensive Test of Phonological Processing, MacArthur CDI, Communication Checklist, Preschool Language Scale

Motor Assessments

Movement ABC, Purdue Pegboard, Alberta Infant Motor Scale, Beery test of Visual Motor Integration, Wide Range Assessment of Visual and Motor Abilities, Developmental Coordination Questionnaire, Grooved Pegboard

Executive Function and Memory Tests

NEPSY, Behavior Rating Inventory of Executive Functioning, Delis Kaplan Executive Function System, Wide Range of Memory and Learning, California Verbal Learning Test, Wechsler Memory Scale, Children’s Memory Scales

Behavioral and Psychiatric Functioning Measures

Child Behavior Checklist, Behavior Assessment System for Children, Aberrant Behavior Checklist, Childhood Depression Inventory, Beck Depression Inventory, Connors, Diagnostic Interview Schedule, Child and Adolescent Symptom Inventory, Play Assessment Schedule, Children’s Manifest Anxiety Scale, Yale Brown Obsessive Compulsive Scale, Multidimensional Anxiety Scale for Children, Beck Anxiety Inventory

Achievement Tests

Wechsler Individual Achievement Test, Woodcock Johnson Tests of Achievement

Patient Recruitment and Database Support

To further support research involving human subjects, the BEC provides a coordinating function with respect to accessing the databases of clinics operated by CHDD’s University Center for Excellence in Developmental Disabilities (UCEDD). UCEDD clinics include general medical genetics, autism, autism genetics, fetal alcohol syndrome, high risk infant follow-up, child development, and employment training, among others. The use of data collected at our clinics for case identification and the fact that families have already been seen at the UCEDD increases the probability and efficacy of successful recruitment. This extensive resource provides direct access for researchers to target groups which can then be complemented by further searches using electronic medical records and other techniques organized through the IDD Research Navigator of our Clinical Translational Core. In most instances, the IDD Navigator and BEC Director will collaborate to meet the needs of an investigator and work closely with each affiliate to develop IRB approval in order to access the databases. The BEC Director serves as a central point of contact for Research Affiliates, thereby providing investigators with the best matches possible.

To Use Our Services

Investigators who are interested in consulting with the Behavioral Evaluation Center should:

Read about the equipment and services we provide, then

  • For information regarding Behavioral Testing Consulting Services and Patient Recruitment and Database Support, contact Raphael Bernier, Director (, 206-685-7585).
  • For information regarding the Behavor Observation Laboratory, Video Editing Facility, or the Mangold Coding Facility, contact  or Devon Bacon (, 206-685-9728).

BOL recording studios and Coding Facility user information page

University of Washington • Center on Human Development and Disability Box 357920 • Seattle WA 98195-7920 USA • 206-543-7701 •