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BCIA Continuing Education Posts
The BioSource Faculty Explain Peer-Reviewed Science


Neurophysiological Assessment in Clinical Practice
Neurophysiological assessment serves not as an independent diagnostic tool but as a physiologically grounded framework for understanding how clients process information, regulate emotions, respond to stressors, and organize their behavior.

John S. Anderson
Nov 21, 202516 min read


Best Practice: Handling Null Results
A null result does not always mean that the independent variable (the factor manipulated by the researcher) does not affect on the dependent variable (the outcome being measured).
BioSource Faculty
Nov 3, 202513 min read


5-Second Science: Revisiting The Facial Feedback Hypothesis
A comprehensive meta-analysis of 138 studies found that facial feedback does have a statistically significant effect on emotional experience, but the effect is small and highly variable.
Fred Shaffer
Oct 26, 20257 min read


Dr. Richard Gevirtz's Journey from GSR to Heart Rate Variability
Dr. Gevirtz's journey began in 1964 as an undergraduate psychology major at the University of Wisconsin.
Fred Shaffer
Oct 2, 20259 min read


Lynda Thompson on Neurofeedback and Biofeedback Synergy
A growing body of research and clinical innovation has underscored the need to integrate multiple therapeutic modalities like neurofeedback and biofeedback when working with clients who present with complex psychological and physiological concerns.
Fred Shaffer
Sep 14, 20253 min read


Mentor Journal - Week 3
Mentor is the most widely used GPT for biofeedback, HRV biofeedback, and neurofeedback didactic learning.
Fred Shaffer
Aug 30, 20251 min read


5-Second Science: The Link Between Traumatic Brain Injury and Psychosis
Using a large nationally representative dataset, the researchers found that people hospitalized for TBI were more than twice as likely to be diagnosed with schizophrenia or other psychotic conditions than similar individuals without TBI.

Zachary Meehan
Jul 30, 20254 min read


5-Minute Science: Are We Missing Autistic Girls?
Although ASD is historically considered more prevalent in males, this assumption may reflect diagnostic bias rather than biological reality.

Zachary Meehan
Jul 7, 20256 min read


The Clinician Detective: Investigation Begins with Careful Observation
Before a diagnosis of a mental disorder can be made, the clinician must rule out that the symptoms are not attributable to the physiological effects of a substance or another medical condition.
Fred Shaffer
Jun 16, 202514 min read


BCIA's New Performance Certification Designation
The Biofeedback Certification International Alliance (BCIA) is introducing a new performance-focused certification designation.
Fred Shaffer
Jun 11, 20253 min read


Best Practice: Small-N Research
Small-N designs are particularly powerful when the treatment effect is large and immediate, allowing researchers to infer causality with confidence.
BioSource Faculty
Jun 5, 202524 min read


Best Practice: Why Research Is Critical
The goal of this post is to help you think like a scientist when it comes to evaluating questionable claims.
BioSource Faculty
Jun 4, 202524 min read


Best Practice: Interrogating Causal Claims
To support a causal claim, a study must meet three essential criteria: covariance, temporal precedence, and internal validity.
BioSource Faculty
Jun 4, 202527 min read


Best Practice: Interrogating Association Claims
Interrogating association claims means asking three core questions: Were the variables measured well (construct validity)? Can the results be generalized to other populations (external validity)? And is the association statistically strong, significant, and precise (statistical validity)?
BioSource Faculty
Jun 4, 202513 min read


Best Practice: Interrogating Frequency Claims
The four big validities offer a comprehensive toolkit for evaluating psychological research. Construct validity ensures that variables are accurately measured or manipulated. External validity tells us whether the results generalize. Statistical validity ensures the numbers are trustworthy. Internal validity confirms that cause-and-effect relationships are legitimate.
BioSource Faculty
Jun 4, 202515 min read


Best Practice: Researcher Claims
Association claims are foundational to psychological research because they help us identify variables that are connected and warrant further investigation. While they cannot prove causality, they provide essential groundwork for asking deeper questions.
BioSource Faculty
Jun 4, 202524 min read


Best Practice: Variables
Understanding how each variable was operationalized helps you evaluate whether results can be compared or generalized. It also helps you decide whether the measure actually reflects the concept you’re interested in.
BioSource Faculty
Jun 4, 202510 min read


5-Second Science: Genes Explain Women's Faster Heart Rates
Women’s faster heart rates are linked to higher expression of genes controlling the sinoatrial node, the heart’s natural pacemaker.
BioSource Faculty
May 27, 20254 min read


The Quigley Report Revised HR and HRV Measurement Standards
Quigley et al. (2024) delivered a comprehensive and much-needed revision of the methodological standards guiding research in heart rate (HR) and heart rate variability (HRV) within psychophysiology.
BioSource Faculty
Apr 29, 202512 min read


A Comprehensive Breathing Myths Guide
Breathing ensures healthy CO2 levels. The main functions of breathing are gas exchange and acid-base (pH) regulation.
BioSource Faculty
Apr 24, 202527 min read
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