Like few other topics in the ethics of psychology, informed consent illustrates the range between the ethical fl oor and the ethical ceiling. It is possible to view informed consent as a mandate, a chore to be completed near the outset of psychotherapy to avoid legal trouble and ensure minimal adherence to the ethical standards set forth in the Ethical Principles of Psychologists and Code of Conduct (the Ethics Code; American Psychological Association [APA], 2010 ). Yet it is equally possible to view informed consent as a golden opportunity to strive for the highest level of ethical ideals, which in turn may maximize positive clinical outcome. The latter of these two approaches is, deservedly, receiving increasing attention in recent years (e.g., Anderson & Handelsman, 2010 ;Fisher & Oransky, 2008 ;. This chapter takes a fl oor-to-ceiling approach to reviewing the empirical and theoretical research on informed consent. That is, it will discuss minimal standards of informed consent that psychologists often have chosen to employ (the ethical fl oor), but ultimately it emphasizes the ways in which the principle of informed consent can inspire psychologists to endeavor toward the highest possible level of ethical behavior (the ethical ceiling).As described in other chapters of this handbook, numerous terms have been used to describe these two discrepant perspectives on psychology ethics. The ethical fl oor approach has been called remedial ethics, medicolegal ethics, or simply minimum standards, while the ethical ceiling has been called positive ethics, active ethics, or participatory ethics . Language regarding informed consent in particular has refl ected a similarly dichotomous view of the concept, especially with terms such as empowered collaboration , shared decision making , and informed choices appearing in recent years as supplements to the more basic term informed consent , suggestive of the ceiling as opposed to the fl oor of this ethical issue (e.g., Barnett, Wise, Johnson-Greene, & Bucky, 2007 ;Wise, 2007 ). The emergence of these new terms refl ects an important movement regarding informed consent in psychotherapy that will be explored throughout this chapter: More than they have in the past, scholars and clinicians are recognizing that the informed consent process has a tremendous upside. Viewed as an aspiration rather than a directive, it undoubtedly can help rather than hinder the therapy process.The Ethics Code, of course, includes both aspiration-and directive-based sections ( APA, 2010 ). The directives are listed as standards, many of which explicitly mention informed consent. The standards most relevant to informed consent to psychotherapy are Standards 3.10 and 10.01 (although several others, including Standard 3.07, Third-Party Requests for Services; Standard 4.03, Recording; and Standard 6.02, Maintenance, Dissemination, and Disposal of Confi dential Records of Professional and Scientifi c Work, are relevant as well). Standard 3.10, Informed Consent, states that psychologists should "obtain th...