Hi Quioxte,
realistically speaking, scientific studies do show that social interaction does help develope brain plasticity. But that doesn't mean that all is hopeless- there are a number of things that you can do to stimulate different areas of the brain (in the place of social interaction) such as taking up music, becoming a geography expert, start writing short stories- (ugh,the parts that include dialogue are the worst for me!) Ah, and my favorite recent pasttime- traveling to Vietnam every few months! yay! Ho Chi Minh City is wonderful, and the feeling of anonymity among six million people + being with somebody that I feel confident and secure around is nice.
That is my strategy anywho- for the most part I think it works for me, except maybe for 2 things- 1) conversation skills- but my gf is helping with that- yes, these skills are picked up more easily when young- the speed and ease in which this skills are picked up diminishes, but these skills are never lost completely I suppose. 2) Excessive stress can cause cortisol damage to the hippocampus, which plays a role in retaining short term memory and creating new ones as well as certain emotional functions. This is the part that scares me :O Although on average most people are not affected long term and anxiety only affects immediate thinking-- maybe you can relate, but I have a difficult time conversating in part because of my anxiety- memory lacking and difficulty concentrating.
Anywho, people vary and yes, I hear you, you are concerned with developing specific intellectual skills rather than overall intelligence. On average most skills are not lost and what is affected in older individuals is the ability to learn novel information (called fluid intelligence). This doesn't mean it isn't possible learn novel info as we get older- of course it is! and we should keep learning new things as we get older. Also what keeps getting better and better are skills already developed called crystallized intelligence- these intellectual skills are the practical knowledge already acquired.
Hmmm.. I hope my writing has been more encouraging than not- first you are still young yet so do not give up any hope, and someone has already made the good point that as we age and develope, different intellectual skills become more useful than some that we may have thought are necessary when we are younger. Also, try as of course you already are, to reduce anxiety and improve your mood! This will do wonders for ability to learn new skills.
If all else fails then you can go to vietnam with me to climb the mountains in the north. :lol: