A study published this summer in Frontiers in Psychology put eighty-one amateur golfers on three dogleg holes at a regulation course and measured something no launch monitor can see. Before each tee shot, every player declared their strategy out loud: aggressive — cutting across the corner — or conservative, following the fairway around the bend. Then the researchers counted strokes.
The aggressive line cost roughly half a stroke per hole.
The sample was male university-level amateurs with a mean handicap of about 26 — the broad middle of recreational golf. The researchers applied a Bayesian multilevel model across 243 observations to separate stable between-player tendencies from situational within-player decisions. When a golfer who normally played the conservative line switched to the aggressive one, their score climbed. The effect survived multiple robustness checks and an alternative ordinal-likelihood model. It was not a fluke of the sample or the statistics.
Half a stroke does not sound expensive until you multiply it. A regulation course with five or six doglegs — which describes most layouts in the British Isles and a fair share of American parkland — turns that tax into something between two and a half and three strokes per round. For a 25-handicapper, three strokes is the distance between breaking 100 and not. The number is not hidden in some exotic skill. It is sitting in the decision a golfer makes before the club ever moves.
Mark Broadie, the Columbia professor whose strokes-gained framework now underpins how the PGA Tour measures performance, has been building toward this conclusion for more than a decade. In Every Shot Counts, he estimated that an amateur could gain between one and four strokes per round from better decisions alone — not from a better swing, not from better equipment, just from choosing smarter targets and managing risk more honestly. "Most golfers are losing strokes just because they're making decisions that are against the odds," Broadie has said. Penalties and poor positioning compound because they cascade: one bad position forces a recovery, the recovery lands in a worse position, and the scorecard records every link in the chain.
The data on blow-up holes tells the same story from the other end. Golf Monthly's analysis of double-bogey frequency across handicap bands found that a 20-handicapper loses roughly ten strokes per round to holes that go sideways — the single largest pool of recoverable strokes in their game. The most common path to a triple bogey starts with a tee shot into a hazard or out of bounds. That first mistake is often mechanical: a pushed driver, a pull off the tee. But the second mistake is almost always a decision. The ball is in the trees. Instead of chipping back to the fairway, the golfer threads a gap that closes halfway through the swing. A physical error becomes a strategic one, and the scorecard records both without distinguishing between them.
What the Frontiers study adds is precision. Broadie's estimates were built largely from Tour data extrapolated to amateur play. The blow-up-hole numbers are aggregate — they describe what the damage looks like without isolating where the decision was made. This study controlled for the player, the hole, and the conditions, then measured the moment of choice in isolation. The cost is real, it is local, and it is large enough to show up in a sample of 243 observations.
The authors are careful to frame their finding as observational, not causal, and to note the limitations: one course, one gender, one handicap band, three holes. They do not claim that every aggressive decision is wrong. A 5-handicapper who carries the corner of a 280-yard dogleg with a high draw is not making the same bet as a 25-handicapper who tries the same line with a fade that has been leaking right all day. The skill to execute an aggressive line is not evenly distributed, and neither is the judgment to know when you have it.
But that is precisely the gap. The golfer who most needs to hear this finding is the one who believes they have the shot when the data says they do not. A launch monitor will tell you that your driver carries 230 yards. It will not tell you that the aggressive line on the fifth requires 245 of carry over water, and that the last three times you tried it, the ball found the hazard. That second piece of information is not swing data. It is round data — and almost nobody tracks it.
The swing is the cost everyone sees. The decision that preceded it is the cost almost nobody tracks. One of them responds to lessons and range time. The other responds only to honest accounting: what did you try, what happened, and what should you have tried instead. That accounting is not a natural act. It requires the kind of structured, dispassionate review that most golfers never do — not because they lack discipline, but because no tool in their bag was designed for it.