Reposted -
Like some other readers, I found Charles Murray's presentation fascinating.
I have been thinking about it. As I commented then, sociologists tend not to discuss psychology. A good rule of thumb is that a person's character traits - personality traits - determine a lot about their adaptation to life and to reality - their success in making goals, and pursuing their goals, for themselves.
It doesn't matter where character traits come from: genetics, examples, or wherever. What matters is the balance between the useful ones and the detrimental ones.
Furthermore, some character traits, like obsessionalism, are good for some things (eg being a pilot or surgeon) but detrimental for others (eg being a jazz musician, or displaying emotion in relationships). For another example, the capacity for controlled violence (useful for cops and soldiers and, in fact many other jobs too including my own, at times). People are even beginning to talk about the usefulness of Asperger's traits.
Each of us is our own stew of traits and strengths and weaknesses. Mature adults do not blame the world or others for their difficulties, but look at themselves, try to identify their shortcomings, and try to improve them if they chose to.
I do not view social class or income as a measure of life success or life adaptation. In my professional world, we use other, less superficial measures such as quality and stability of relationships, breadth of interests, responsibility and reliability, self-control, active engagement in life, and so on.
However, as Murray implies, social class can be a very rough measure of human adaptation for people with material ambitions: people in the upper middle class tend to be more adaptable and able socially and intellectually, and those in the lower class tend to either have more adaptive problems, or to cause more problems for others (which includes governmental or charitable dependency, crime, disorder, etc).
Before I run out of space, I want to say a word about social capital, as I constructed my own practical understanding of it. In my simple-minded way, applying one's social capital means participating in and contributing to one's community, whatever that may be. Being a constructive part of it, beyond the bare minimum of holding down a job or raising a family.
Whether it's as simple as introducing people to each other, throwing holiday parties, getting a stop sign on a corner, helping a kid find a job, volunteering at church, raising money to sustain the local chamber group, running a Boy Scout troop, attending town meetings, joining clubs, starting a softball team, or coaching soccer, we all have ways to contribute to our social network, our neighborhoods, and to our communities. I do know how corny all that sounds, but I believe it is very important.
Our social capital is truly the kind of capital which we must either spend or waste before we die. People who do not jump in and spend theirs before they die are selfish, mean, and un-American, in my book.