Examples of Unethical Research. Whichever ethical requirement may be chosen, the history of human research offers grim examples of its violation. During World War II, German researchers performed a large number of experiments in concentration camps and elsewhere.
First, lower income earners pay no federal income taxes on Social Security benefits, so taxation is not an issue for them. However, once a relatively low threshold level of taxable income is surpassed, somewhere between 50 to 85 percent of benefits are subject to taxation.
Since the passage of the 1983 Amendments to the Social Security Act Social Security benefits are subject to taxation. The amount of Social Security income which is taxable depends on your taxable income. Most high-income retirees will have 85% of Social Security benefits taxable. For lower-income retirees, less than 85% will be taxable, but many retirees in a 15% tax bracket will face a marginal tax rate much higher than 15%.