Marco speaks a language that is also spoken by about 100 million other people. Which of the following languages could be Marco's?

Which of the following is caused by a gene on the X chromosome?

A) Tay-Sachs disease B) Color blindness C) PKU D) Sickle-cell disease

What is a potential ethical consideration to be aware of when conducting a research study similar to the Kassin and Kiechel (1996) study?

A) informed consent should always be presented B) interrogation techniques inflicting physical pain should not be used C) deception should only be used when absolutely necessary D) participants should be able to terminate participation at any time