The more "Intelligent" a sentient being is the more likely they are to suffer in quality of life as a result of their own intelligence, relative to the beings around them. This is a point that I will argue and explore in this post. I have thought about this for many years now, connecting patterns of behaviors of those who were deemed to be intelligent and from first hand experience of those around me. I do not make this argument to doom the intelligent to any sort of fate but simply to perhaps explore the loneliness or detachment that population experiences in daily life. I will forewarn you that I consider my self to either be intelligent or very misguided.
Sentience is the ability to feel sensation and produce thought, however basic, from said sensation. Whether the sensation in physical like pain, cold, heat, etc. or an emotional sensation and be aware of it. By this modern definition there are animals who have been deemed sentient beings such as dogs as they have the ability to perceive physical and emotional sensation and give thought to the reaction rather than by instinctual reaction such as our fight/flight response. The philosophers of the 16th century would argue that sentience is rather the ability to reason. Sentience and sapience are often used interchangeably but sapience goes further than sentience in the regards that it includes the ability of self transcend based upon ones wisdom/experience. While a dog could, by definition, be considered a sentient being, some would argue that a dog is not sapient or wise, as dogs don't have the ability to empathize and explore anything beyond what they are.
Intelligence, by definition, is the ability to acquire and apply knowledge and skills. This definition separates the gathering of knowledge and it's use. After all, there are many students who finish a Bachelors degree but are not people you would consider intelligent. Testing intelligence is based upon the comparison of others and there is not one set scale or meter by which to measure intelligence. Even the smartest of primates doesn't compare to human beings and even the human beings of past millennia wouldn't compare to the minds of today. Intelligence is a moving target as we as a race combine to the common pool of knowledge and enlarge it's scope and mass every day. I think that filtering knowledge should also play a part in intelligence. With the sheer amount of data that one can find on the internet or even in a brick and mortar library, an individual seeking to gain knowledge and apply it for a specific purpose can easily spend more than a day were they blindly attempting to gain a specific piece of knowledge. After all, given enough time and motivation, an unintelligent individual could scour a library book by book, A to Z, to find a book that would say how many individual squares there are on a chessboard. An intelligent person would start by finding the pattern to the libraries organization and filter out each section and filtering out thousands of irrelevant books in a comparatively short amount of time.
Having defined and explored what it means to be an intelligent, sapient and sentient being one can begin to explore how those at the right end of the bell curve are affected by their own intelligence. For starters, while it may seem almost non-applicable in our new world of computers, but those who are intelligent are more prone to have sloppy or unaesthetic handwriting. This is because the thoughts and ideas forming in the mind are flowing at a faster rate than their hands can keep up with. With the advent of typing on a keyboard similar correlations may be found even with typing speeds of over 100 words per minute. While this is but a minor crutch, it does get rather annoying to have a natural flow of thought interrupted by the mechanical chokepoint of fingers.
On a much more serious note, there are higher rates of depression, anxiety and bi-polar disorder amongst the more intelligent. This is often related to the tendency to ruminate or analyze extensively. Whether it be what someone said you, how they acted differently or other things of similar nature, intelligent people tend to over think and become what is called "psychologically overexcited". This however could be explained away because intelligent individuals are more likely to recognize a problem with their mental well being and seek help. The access to help is probably more available to this population as well.
This line of thought brings me back to something I wrote about in a blog a few weeks ago about the tribes in Africa. My peer in the Army and I discussed how life back in the tribe was easy going and far less stressful albeit less intellectually stimulating. My friend told me it was a happier and simpler time. Perhaps those of intelligence could gain something from this perspective when they feel overwhelmed: Life is still essentially simple, there just isn't a need to analyze or ruminate on every single detail and possibility. There is also a time to slow down, and take a while to be blissfully ignorant like a camping trip or a quiet afternoon alone or with friends/family.