One Slip Does Not Cause a Relapse, But Your Reaction To It Can

A man trying to cut back on drinking has one beer at a friend's barbecue after two clean weeks. A man on a strict diet eats one slice of cake at his kid's birthday party. In both cases, the food or drink itself did very little damage on its own. What happens in the hours and days immediately afterward tends to matter far more, and psychologists have a specific, well studied name for the pattern that usually determines which way it goes.

Addiction researcher G. Alan Marlatt, at the University of Washington, described what he called the abstinence violation effect as part of his broader relapse prevention model developed through the 1980s. The core finding was that a single lapse after a period of successful abstinence often triggers a much larger collapse than the lapse itself would logically justify, and that the size of the collapse depended heavily on how the person explained the lapse to themselves in the moment right after it happened.

Separately, psychologists Janet Polivy and Peter Herman, at the University of Toronto, documented a closely related pattern specifically in dieters, which they and later researchers came to call the what the hell effect. In their studies, dieters who believed they had already broken their diet, sometimes because researchers deliberately gave them a larger first portion than they had planned to eat, went on to eat significantly more afterward than dieters who had not been led to believe they had already failed, even when the actual calories already consumed were nearly identical between the two groups. The belief that the diet was already ruined for the day did more damage than the food itself ever could have.

The mechanism both lines of research converge on is about attribution, specifically whether the lapse gets explained in characterological terms or situational ones. A man who has the beer and thinks I have no self control, I always do this, I am just not someone who can stick to anything is drawing a conclusion about his fixed character, which offers no obvious next step except giving up entirely, since a character flaw is not something one more beer is going to make meaningfully worse or better. A man who has the same beer and thinks that was a stressful week and I slipped, tomorrow I am back on track is explaining the same event in situational terms instead, which leaves the door open to simply continuing rather than having to somehow salvage a now supposedly ruined effort.

This distinction has shown up with real consequences in actual treatment settings, not just laboratory studies. Research following people through weight loss and addiction treatment programs has found that those who explained lapses in more personal, character based terms lost less weight and were more likely to drop out of treatment entirely than those who explained the same size lapse more situationally, even when researchers accounted for how severe the initial lapse actually was to begin with. The size of the original slip mattered far less than the story a person told themselves about what it meant.

None of this is an argument for treating every lapse as harmless or beside the point. Patterns matter, and repeated lapses are worth paying attention to honestly rather than explaining away indefinitely. What the research does argue against is the specific, common leap from one slip to a full verdict on your character, since that leap, more reliably than the slip itself, appears to be what actually derails the effort that came before it. The most useful question after a slip is rarely what does this say about me, and almost always just what happened right before it, and what would make tomorrow easier than today was. Talking that question through with someone else, rather than only turning it over alone where the harsher explanation tends to win by default, is part of what a space like MenWhoFeel's Community forum is useful for.