What if I estimate my IQ to be 3? There was no option for that. I was smart enough to figure that much out. Yay me!
OK. So I will make my standard comments when it comes to IQ.
Why are people so worried about peoples IQs? Because they believe it to be a determinant of how far you will go in life? Hardly. IQ is a good predictor to be sure, but that is because very few actually do what it takes to achieve excellence. Most people are just average at the things they do with slight variations due to IQ.
Examples of people practicing and improving IQ abound. Even those Raven's Progressive Matrices (the most g loaded) can be practiced. Though, I don't really see the benefit of increasing your IQ scores directly. IQ can increase for various other reasons that represent real progress...overcoming a learning disability, changing a predominantly negative mindset when it comes to cognitively difficult tasks, improved nutrition, better sleep hygiene, etc.
I still maintain that continued
deliberate practice is what leads to human excellence. IQ may be a good measure on average. But those that aspire to be excellent at something should look into the research of Anders Ericsson, on what makes good practice vs. bad.
For instance in chess, past a certain point, the hours of study of positions is the best predictor of chess rating...while hours playing social and blitz chess is virtually meaningless as a predictor (and can even be detrimental).
For those specifically interested in excellence in science (and to some extent technology), art, and leadership, the research of Dean Keith Simonton is good.
One of his key findings:
Although at least a moderately high IQ is important for the achievement of eminence, statistical analyses demonstrate that intelligence accounts for only about 4-5 percent of the variance in measures of cultural eminence. Developmental, motivational and personality factors seem to matter a great deal more. Thus, very intelligent people do not necessarily accomplish great things (Simonton, 1999a; Simonton, personal communication, July 5, 2003)
http://projects.ict.usc.edu/itw/gel/EricssonDeliberatePracticePR93.pdf
Human Intelligence: Dean Keith Simonton
Also, I wasn't able to find the list of professions and IQ ranges again. But an average IQ is no barrier to entry in most fields (notable exceptions being Doctors and Lawyers)...and with an IQ of about 120 or above, you don't need to worry about any profession.
Get over your IQ obsession people. There are other things more important (and more changeable) that determine success.