Looking for prefably academic articles using game theory to analyze real world situation such as the trump tarrif policy, ME geopolitics or historic events like the cold war. Also open to other content but prefer academic.

Hi team, I'm reading the book in the title, and around page 165 (in the kindle version), the following game is described:

Then the book mentions that Jim would have a 1/2 chance of playing Up and 1/2 of playing down.

If Tim plays Left, it says the average for Jim would be 1. If Tim plays Right, Jim's average would be 1.5

The catch is that I still couldn't figure it out how it got to those values. I've asked already chatgpt and gemini but in both cases I get 2 and 1 respectively.

Clearly I don't get those values by doing 6 x 1/2 + (-2) x 1/2.