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

The treatment has no research support

Answer

The treatment is investigational with only case studies

Answer

The treatment meets ethical standards but lacks research

Question 2

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

Accepted Answer

Randomized controlled trials (RCTs)

Answer

Case reports

Answer

Open-label pilot studies

Answer

Expert consensus panels

Question 3

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

Accepted Answer

Level 4 — efficacious

Answer

Level 2 — possibly efficacious

Answer

Level 3 — probably efficacious

Answer

Level 5 — efficacious and specific

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

An enhanced biofeedback protocol for severe cases

Answer

A training method used in home practice

Answer

A diagnostic tool to assess client baseline

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

Cohen's d

Answer

Confidence interval

Answer

p-value

Question 6

A meta-analysis in biofeedback research combines data across multiple studies primarily to:

Accepted Answer

Increase statistical power and provide a more precise estimate of treatment effects

Answer

Replace the need for new RCTs

Answer

Identify the best single study to rely upon

Answer

Standardize treatment protocols