A young person who has undergone puberty but who has not reached full maturity; a teenager 13-19 years of age. Tithing. An act of trust in which whenever someone receives money, or an increase, 10% is returned to God first. Budget. An estimate, often itemized, of expected income and expense for a given period in the future. A budget is basically planning what to do with money we still do not have, so that, when we have it, we will know exactly what to do with it. Greed. The desire for material wealth or gain, ignoring the realm of the spiritual. It is also called avarice or covetousness. Pleonexia. The insatiable desire to have what rightfully belongs to others. Hoarding. The accumulation of money for preservation, future use, etc., in a hidden or carefully guarded place. Simple interest. Interest paid only on the original amount of money invested, and not on the interest it has already earned. Compound interest. Interest earned not only on the original amount of money invested, but also on all interests earned previously. Likert-type scale. A scale with a range of several points that is used to allow the individual to express how much s/he agrees or disagrees with a particular statement. Affluenza. The constant need for more and bigger and better stuff. Credit-itis. The opportunity to buy now and pay later; it feeds on the desire for instant gratification. Contentment. The state of mind of being happy with what one has. Delayed gratification. The ability to resist the temptation for an immediate reward and wait for a later reward, usually a larger or a more enduring reward. Standard Deviation (SD). The amount of variation or dispersion from average. p value. The probability that the difference found is explained by pure chance. The smaller the p value, the less likely it is that the result we get is simply the result of chance. A p value of 0.05 is usually deemed statistically significant. American College Test (APC). The college admissions and placement test taken by more than 1.6 million high school graduates every year.