Stimulus control and chronic pain behavior. A study of low back and head/neck/face pain patients.

Haemmerlie (1983) watched adults with long-lasting pain. Some had low-back pain. Others had head, neck, or face pain.

The team changed the room cues. They then counted pain behaviors like grimacing or guarding. They asked, "Do these behaviors rise and fall with the cues?"

Low-back patients clearly showed more pain moves when cues said "pain time." They showed fewer moves when cues said "no pain time."

Head, neck, and face patients followed the same pattern, but the swing was smaller. The context still mattered.

Lord et al. (1997) later saw the opposite. They found that physical, thinking, and mood factors predicted pain moves. Adding operant factors did not help prediction. The two studies seem to clash.

The gap is about method. Haemmerlie (1983) used a single-case design and watched moment-to-moment changes. Lord et al. (1997) used group stats and survey scores. Both can be true: context shifts behavior in the room, yet mood and body status shape the overall level.

Bieniek et al. (2023) extend the idea. They used tokens and social praise to create placebo pain relief in healthy adults. Their trial shows you can purposely use contingencies to drive pain reports, backing the 1983 view that pain behavior is operant.

You now have two levers. First, spot the cues that pull pain behavior from your client. Second, add or remove contingencies to shift those cues. For example, keep social attention flowing for well behavior, not for pain talk. This study reminds you to assess the room, not just the body.