Van Tharp's Trading Psychology: The Daily Tasks, R-Multiples and Position Sizing

Van K. Tharp was one of the few people in trading psychology with a psychology degree: a doctorate from the University of Oklahoma. He coached traders for about four decades, founded the Van Tharp Institute in 1992, and was interviewed in Jack Schwager's Market Wizards (1989). He died in 2022.

His best-known book, Trade Your Way to Financial Freedom (1999), is mostly about systems and position sizing. The thread through all of his work is the person running the system. A good method in the hands of a trader who sabotages it is not a good method anymore.

You Trade Your Beliefs, Not the Market

Tharp's starting point: you don't trade the market itself, you trade what you believe about it. Beliefs decide what you notice on the chart and what you do about it. Two traders look at the same candle; one sees a breakout, the other a trap, and each acts on what they believe.

Two pieces of practical advice follow from that. Write your beliefs down, about the market, about risk and about yourself, so the ones that cost you money can be seen and changed. And take full responsibility for your results. Blaming the broker, the market or the news feels better, and it guarantees the same mistake again. More on that pattern in The Need to Be Right.

The Tasks Before the First Trade

Tharp described trading as a set of tasks, and the first four, as his institute lists them, are all about preparing the day. Most traders skip every one of them: they open the chart and let it decide what kind of day it's going to be.

1. 1.Daily self-analysis. Look at yourself before you look at the market. In practice: how you slept, what's weighing on you, whether anything outside trading is pulling at you. A good plan run in a bad state is a different plan.
2. 2.Daily mental rehearsal. Walk through what could go wrong with today's plan, and decide in your mind how you'll deal with it. In practice: the stop gets hit, a fast candle runs against you, a news spike. See yourself in each one, doing what the plan says.
3. 3.Focus and intention. Set a clear, deliberate focus for the day's trading. In practice: one sentence about what today is for, written before the platform opens.
4. 4.A low-risk idea. A trade idea whose risk is defined and limited before you take it. In practice: you know where you're wrong and what it costs before the order goes in. That cost is your R.

The rehearsal is the one most worth stealing. A decision made in advance, on a calm mind, doesn't have to be made in the heat of the moment, which is exactly when rules tend to disappear.

R: Measure Every Trade by What You Risked

Before entry, decide where you're wrong. The money between your entry and that exit is your initial risk, and Tharp called it R. Every result then becomes a multiple of R. Risk $100 and make $250, and the trade was +2.5R. Lose $100 at your stop and it was −1R.

The rule underneath is simple: a loss should never be bigger than 1R. A moved or ignored stop turns a planned −1R into −3R, and the R-multiple shows it plainly, where a dollar figure lets you argue with it.

Average the R-multiples of your trades and you have the system's expectancy: what it earns per unit of risk over time. His institute puts the minimum sample at 30 trades, with 100 to 200 for a clearer picture. Fewer than that, and a good or a bad week is mostly noise.

R also changes how a loss feels. A −1R day is the plan working: you were wrong, and it cost exactly what you said it would. That's a very different thing from a −$400 day you didn't see coming. More in the risk-reward math and the four types of trades.

Position Sizing: How Much, Not What

Tharp's most repeated point was that how much you trade on each idea matters more than what you trade. The same entries, sized differently, produce completely different results, and size is where emotion gets in: the bigger the position, the louder the fear.

His guidance: risk a small, fixed share of the account on each idea, start small while you're learning a method, make size smaller during a losing streak, and never size up to reach a profit goal by a date.

On a prop account the same idea runs on your drawdown, not your balance: size by what's left. The Drawdown Ladder does that math, and Find Your Comfort Loss covers the size you can lose without flinching.

Close the Loop After the Day

Tharp's list of tasks that we could check covers the morning. Our addition: the day needs an end, too. A short review after the session, judged by the plan and not by P&L. Which trades followed the plan? What did each one cost or make in R? Did the morning's rehearsal happen when it was needed? Then one change for tomorrow. That review turns a bad day into information instead of a mood.

A Five-Minute Version

1. 1.Before the session, two minutes. Check your state honestly. Rehearse the one moment most likely to go wrong today. Write your intention in one line.
2. 2.Before each trade. Know your exit and your R before entry. If you can't name them, it isn't a low-risk idea yet.
3. 3.After the session, two minutes. Grade each trade by the plan, not the result, and write it in R. Then one change for tomorrow.

LAYER 0 is built around this loop: the Firewall Check is the self-analysis, the twenty seconds before the first trade are the rehearsal, and the Daily Close grades the day by the plan and shows it in R. LAYER 0 isn't affiliated with Van Tharp or the Van Tharp Institute. The ideas are his; the app is one way to run them every day.

Frequently Asked Questions

Sources

• Van Tharp Institute. About Van Tharp.
• Van Tharp Institute. Tharp Think Trading Concepts: the tasks of trading, R-multiples, expectancy and position sizing.
• Tharp, V. K. (1999). Trade Your Way to Financial Freedom. McGraw-Hill.
• Schwager, J. D. (1989). Market Wizards: Interviews with Top Traders. New York Institute of Finance.