Not too sure about that childhood thing.. Tall people don't really have any advantage unless they are chosen for positions that require a certain symbolic superficiality- ie. institutional sales, shopkeeper for a high end store, model, politician, chief executive, project manager, etc. Anything that's high end marketing, sales, etc...you'll see a lot of tall & relatively good looking people. It has little to do with sex, either. A tall assertive woman would be perceived just the same. It's one component of that sum total attractiveness. And all those jobs that you have listed require what? Confidence, self-esteem, assertiveness.