Social security payments increase if people wait until what age to stop working?

For each of the following examples of data, determine which scale of measurement is used. a) the number of miles joggers run per week. b) the starting salaries of graduates of mba programs c) the months in which a firm's employees choose to take their vacations. d) the final letter grades received by students in a math course.

Are people more motivated to change from positive or negative experiences, like slavery, womens rights, and any other historical movements/moments? i need more factual information than opinions.

Sociologists found that the effects of institutionalization on infants, i.e. lack of a caring environment, will result in slower development of their mental, physical, and emotional skills. true or false? ?