I would say that all depends on the context of the question. Does the question assume that people that have money are depressed or does it assume that people who don’t have money are depressed. I would say that money in itself does not invariably cause depression. The lack of money however, depending on the individuals life goals, could bring up a spout of depression. In general, if someone is depressed, it is not from having too much money. Additionally, I think most people are of the opinion then it is better to be rich and happy then to be poor and happy. It is also better to be rich and happy than poor and unhappy. There are instances in which money is linked to depression but invariably linked? I think not.
Depression is generally something that can be beat. It usually stems from a lack of something in an individual’s life. Lack of exercise could lead to obesity which could lead to depression. Lack of love could lead to anger which could lead to depression. Lack of purpose could lead to boredom which could lead to depression. Lack of money could lead to an entire mess of problems which could lead to depression. It seems to me that having money would not lead to depression in itself. You could have money and be depressed but the depression would not necessarily come from the fact you have money. Money in that sense is not invariably linked to depression.
It would also be interesting to see what people who have money think and what people who do not have money think. I am betting on the fact that people with money do not see an invariable link. People that do not have money however, would be more likely to see money as a cause of depression. Why you ask? Well, this question isn’t so much about money as it is about psychology. Usually people with money are like-minded. They see life in the same way and whatever way that is, has got them in a position in which they have acquired money. On the other hand, a majority of people that do not have money think in the same ways and that has gotten them in a position in which they have no money. So, I bet that people without money would say that it causes depression because quite simply, it is an easy excuse. And based on the fact that is how people without money justify things, I would say my bet is right.
A real simple way to figure out if money is invariably linked to depression is to take money out of the equation. What you would need is a person with alot of money and depression. You then sit this person down and ask them one question. If I took away all your money, do you think it would cure your depression. I am guessing that person with the money would look at you like you were crazy. Thought about in that light, the logic is flawless, money is not invariably linked to depression.