BCIA Research & Evidence Base

Question 1

According to AAPB/ISNR efficacy guidelines, a Level 5 rating for a biofeedback application means:

Accepted Answer

The treatment is efficacious and specific, supported by rigorous randomized controlled trials

Answer

Level 5 (Efficacious and Specific) is the highest evidence rating, requiring well-designed randomized controlled trials demonstrating superiority over credible control conditions.

Question 2

Which research design provides the strongest evidence for the efficacy of a biofeedback intervention?

Accepted Answer

Randomized controlled trials (RCTs)

Answer

Randomized controlled trials, particularly those with active or sham control groups, minimize bias and confounds, providing the strongest causal evidence.

Question 3

EMG biofeedback for tension-type headache has been classified at which AAPB efficacy level?

Accepted Answer

Level 4 — efficacious

Answer

EMG biofeedback and thermal biofeedback for headache have been rated Level 4 (Efficacious) based on multiple controlled studies demonstrating significant benefit.

Question 4

In biofeedback research, what does 'sham biofeedback' serve as?

Accepted Answer

A placebo control condition that presents false feedback unrelated to actual physiology

Answer

Sham biofeedback presents feedback signals unrelated to the client's actual physiology, controlling for nonspecific effects like attention, expectancy, and therapist contact.

Question 5

Which statistical concept describes the percentage of outcome variance explained by a treatment in biofeedback research?

Accepted Answer

Effect size (r² or η²)

Answer

Effect size metrics like r² or eta-squared (η²) quantify the proportion of variance in outcomes attributable to the biofeedback intervention.

BCIA - Biofeedback Certification International Alliance Practice Test

BCIA - Biofeedback Certification International Alliance Practice Test

BCIA Research & Evidence Base