Health Care Core Curriculum Healthcare Ethics Dede Carr, BS, LDA Karen Neu, MSN, CNE, CNP 1 “This workforce solution was funded by a grant awarded by the U.S. Department of Labor’s Employment and Training Administration. The solution was created by the grantee and does not necessarily reflect the official position of the U.S. Department of Labor. The Department of Labor makes no guarantees, warranties, or assurances of any kind, express or implied, with respect to such information, including any information on linked sites and including but not limited to, accuracy of the information or its completeness, timeliness, usefulness, adequacy, continued availability, or ownership. This solution is copyrighted by the institution that created it. Internal use, by and organization and/or personal use by an individual or non-commercial purposes, is permissible. All other uses require the prior authorization of the copyright owner.” 2 Competencies: Describe aspects of ethical decision-making in health care. 1. Define ethics 2. Define the Code of Ethics 3. Explain the purpose of the Code of Ethics 4. Identify eight guiding principles in ethics 5. Identify steps/framework for ethical decision-making 6. Discuss the difference between legal “guidelines” and ethical decision-making 3 The term ethics has several meanings in common use: A method of inquiry that helps people to understand the morality of human behavior (study of morality) The practices or beliefs of a certain group (medical ethics, nursing ethics) The expected standards of moral behavior of a particular group as described in the group’s formal code of professional ethics. (Ramont & Niedringhaus, p. 38) 4 Ethics: The study of conduct and character; (Potter & Perry, p. 314) concerned with determining what is good or valuable for individuals, for groups of individuals, professions, and for societies strive to meet. 5 Acts that are ethical reflect a commitment to standards beyond personal preferences--standards that individuals, professions, and societies strive to meet. When it comes to decision-making in health care, however differing values between individuals cause intense disagreement about the right thing to do. (Potter & Perry, p. 314 6 Understandable conflict occurs between health care providers, families, clients, friends and people in the community about the right thing to do when ethics, values, and decisions about health care collide. (Potter & Perry, p. 314) 7 Bioethics is ethics as applied to life (decisions about abortion or euthanasia). Nursing ethics refers to ethical issues that occur in nursing practice. (Ramont & Niedringhaus, p. 38) 8 Morality (or morals) is similar to ethics and many people use the terms interchangeably. Morality usually refers to private, personal standards of what is right and wrong in conduct, character, and attitude. Sometimes the first clue to the moral nature of a situation is an aroused conscious or an awareness of feelings, such as guilt, hope, or shame. (Ramont & Niedringhaus, p. 38) 9 Another indicator is the tendency to respond to the situation with words such as ought, should, right, wrong, good, and bad. Moral issues are concerned with important social values and norms; they are are not about trivial things. (Ramont & Niedringhaus, p. 38) 10 Moral principles are statements about broad, general, philosophical concepts such as autonomy and justice. Principles are useful in ethical discussions because even if people disagree about which action is right in a situation, they may be able to agree on the principles that apply. (Ramont & Niedringhaus, p. 38) 11 Such agreements can serve as a solution that is acceptable to all parties. Ethical issues are looked at differently among people of different cultures; one must consider these differences when providing health care. (Ramont & Niedringhaus, p. 38) 12 13 Respect & Dignity for Human Life Autonomy (Self-Determination Nonmaleficence (Do no harm) Beneficence (Do good) Justice (Fairness) 14 Fidelity (Keeping promises) Veracity (Truth telling) Confidentiality (Be discreet with privileged information) Responsibility Accountability 15 Respect for each client as a unique individual is an ethical principle. This uniqueness is demonstrated in differences in age, race, religion, gender, culture, sexual preference, attitudes, background, and responses to illness. (Hegner, Acello, & Caldwell, p. 37) 16 You may find the differences make the patient so different also making dealing for the patient so challenging or difficult. If you respect each patient as a valuable person, you learn to accept and work with each one in the best way possible. (Hegner, Acello, & Caldwell, p. 37) 17 All residents and patients have the right to be respected and treated with dignity. Dignity affords the resident pride and selfrespect. (Webster’s New World College Dictionary, 2009) Remember that residents have been fully functional beings before getting frail and sick. They do not need to be talked to with “baby talk.” This is disrespectful not only to the resident, but to the family as well. (Alvare, Fuzzy, & Rymer) 18 Dignity is an important issue when working with residents and patients. Be sure to knock on the door before entering a room. Keeping the resident covered during care is very important. Think about how one would want to be treated. Maintaining privacy means pulling the curtain between beds and closing the curtains or blinds in the window. (Alvare, Fuzzy, & Rymer) 19 Autonomy (Self-Determination) refers to the right to make one’s own decisions. Healthcare workers follow this principle by recognizing that each client is unique, has the right to be what that person is, and has the right to choose personal goals. (Ramont & Niedringhaus, p. 39) 20 Honoring the principle of autonomy means that the healthcare worker respects a client’s right to make decisions even when those choices seem not to be in the client’s best interest. It also means treating others with consideration. In the healthcare setting, this principle is violated, for example, when the healthcare worker disregards a client’s report of the severity of his/her pain. (Ramont & Niedringhaus, p. 39) 21 Autonomy (Self-Determination) Examples: The consent that clients read and sign before surgery illustrates this respect for autonomy. The signed consent ensures that the health care team obtained permission from the client before proceeding with the surgery. (Potter & Perry, p. 314) (Minnesota Department of Health) 22 Autonomy is reflected in the information about rights during individuals’ stay in a facility or throughout their course of treatment and maintenance in the community as stated in the Patient’s Bill of Rights (document signed by clients/families). (Minnesota Department of Health) 23 Certain concepts act against autonomy. Paternalism refers to a concept wherein healthcare providers make choices on behalf of the patient under the misguided notion that said healthcare provider knows “what is best” for the patient. It may be the family members who are acting in a paternalistic manner and deciding what is best for the patient without allowing the individual to make his or her own choices in the matter. 24 We appropriately manifest paternalism when we tell a six year old child that he may not play with matches. We are guilty of inappropriate paternalism when we make decisions on behalf of patients because we believe that we are more knowledgeable than is the patient in matters concerning that patient’s health. (Brenneman, p. 2) 25 Beneficence means “doing good,” positive actions to help others; the encourages the urge to do good for others. Healthcare workers are obligated to do good, that is implement actions that benefit clients and their support persons and are more important than selfinterests. ◦ For example, a child may ask for a pill to be crushed and mixed with a food, even though you know the child is able to swallow the pills whole. Your commitment to do good for others guides you to comply with the child’s wishes, even if you are having a busy day. (Potter & Perry, p. 314) 26 However, doing good can also pose a risk of doing harm. ◦ For example, a nurse may advise a client about a strenuous exercise program to improve general health, but should not do so if the client is at risk for a heart attack. (Ramont & Niedringhaus, p. 39) 27 Nonmaleficence is duty to “do no harm or hurt.” ◦ This seems like a simple principle to follow, but in reality is quite complex. The healthcare worker tries to balance the risks and benefits of a plan of care while striving to do the least amount of harm possible. Harm can mean intentional harm, risk of harm, and unintentional harm. (Ramont & Niedringhaus, p. 39) In healthcare, intentional harm is never acceptable. 28 However, the risk of harm is not always clear. ◦ For example: A client may be at risk of harm during an intervention that is intended to be helpful. For example, a bone marrow transplant procedure offers a chance at cure but the process involves periods of suffering. Healthcare workers need to consider the associated discomforts, taking into consideration the suffering of the disease itself causes the suffering that other treatments will possible cause. (Potter & Perry, p. 314) 29 Justice refers to fairness. Healthcare providers strive for justice in health care. The term is often used in discussion about healthcare resources. What constitutes a fair distribution of resources is not always clear. 30 ◦ For example, in the US the number of candidates awaiting liver transplants is around 93,000, far more candidates than donors (United Network for Organ Sharing [UNOS], as cited in Potter & Perry, p. 314) ◦ What is fair distribution of this scarce resource? ◦ Criteria set by a national multidisciplinary committee make every effort to ensure justice by ranking recipients according to need. This system remains preferable in the US to the selling of organs for profit, which would favor recipients with the most money and preferable to a distribution by lottery, which would result in random distribution without regard to justice. (Potter & Perry, p. 314) 31 Examples of Justice at Work Use supplies responsibly to avoid waste Do work assigned to you and your fair share as a team member Treat all patients equally and fairly regardless of age, race, or religion Give a fair share of work for a fair share of wages Give nursing care on the same level to all patients regardless of their racial or religious beliefs. Show equal courtesy and respect to all patients. (Alvare, Fuzzy, & Rymer) 32 Fidelity means to be faithful to agreements and promises. By the virtue of their responsibilities as professional care givers, healthcare workers have responsibilities to clients, employers, the government, and society, as well as themselves. 33 Healthcare workers often make promises such as “I’ll be right back to assist you with your bath” or “I’ll find out for you.” Clients take these promises seriously, and so should healthcare workers. (Ramont & Niedringhaus, p. 39) 34 Fidelity refers to the agreement to keep promises. A commitment to fidelity supports the reluctance to abandon clients, even when disagreement occurs about decisions that a client makes. The standard of fidelity also includes an obligation to follow through with care offered to clients. If you tell the client that you plan to fix her hair after her bath and shampoo, the standard of fidelity encourages you to follow through with your plan. (Potter & Perry, p. 314) 35 Veracity refers to telling the truth. Although this seems straightforward, in practice, choices are not always clear. Should a healthcare worker tell the truth when it is known that it will cause harm? Does a healthcare worker tell a lie when it is known that the lie will relieve anxiety and fear? The loss of trust in the healthcare worker and anxiety caused by not knowing the truth, for example, usually outweigh any benefits derived from lying. Lying to sick or dying people is rarely justified. (Ramont & Niedringhaus, p. 39) 36 Code of Ethics: a set of guiding principles that all members of a profession accept; a collective statement about the group’s expectations and standards of behavior, reflects the group’s moral judgments over time, & works as a standard for their professional actions. Codes of Ethics serve as guidelines to assist professional groups when questions arise about correct practice or behavior. (Potter & Perry, p. 315) 37 Every person has a right to a continuity of good quality Health Care without discrimination and within the limits of the resources, manpower and competence available for health and medical care. In the course of such care, human dignity, convictions, integrity, individual needs and culture shall be respected. 38 1. 2. 3. 4. 5. 6. Inform the public about the minimum standards of the profession and help them understand professional healthcare/nursing conduct. Provide a sign of the profession’s commitment to the public it serves. Outline the major ethical considerations of the profession. Provide general guidelines for professional behavior. Guide the profession in self-regulation. Remind healthcare workers of the special responsibility they assume when caring for the sick. 39 The ethical code asserts that information about patients is privileged and must not be shared with others. Discuss information only in appropriate places, with the appropriate people, and 40 International, national, state, and provincial nursing associations have established codes of ethics. The American Nurses Association (ANA) established the first code of nursing ethics decades ago and reviews and revises the code regularly to reflect changes in practice. Basic principles remain constant, however: * Responsibility * Confidentiality * Accountability * Advocacy 41 Ethical problems in healthcare are due to social and technological changes and healthcare workers’ conflicting loyalties and obligations. Social Changes: Women’s movement, growing consumerism, large number of uninsured , high cost of health care, and workplace redesign under managed care—raise issues about fairness and allocation of resources (justice). (Ramont & Niedringhaus, pp. 39-40) 42 Technology: monitors, ventilators, parenteral feedings, (growth of premature infants), prolong biological life Who should be treated—everyone, only if they can pay, only those who have a chance to improve? (Ramont & Niedringhaus, pp. 39-40) 43 Conflicting Loyalties & Obligations Healthcare workers, especially nurse experience conflicts among their loyalties and obligations to clients, families, physicians, employing institutions, and licensing bodies. Clients may conflict with institutional policies, physician preferences, needs of the client’s family, or even laws of the state. (Ramont & Niedringhaus, p. 40) 44 According to the codes of ethics, healthcare workers first loyalty is to the client. For example, a nurse may think that a client needs to be told a truth that others have been withholding; but this might damage the client-physician relationship, in the long run causing harm to the client rather than the intended good. (Ramont & Niedringhaus, p. 40) 45 Responsible ethical reasoning is rational and systematic; should be based on ethical principles and codes rather than on emotions, intuition, fixed policies, or precedent. (Precedent is an earlier similar occurrence.) Good decision is in client’s best interest and preserves the integrity of all involved. (Ramont & Niedringhaus, p. 40) 46 The healthcare worker must weigh competing factors when making ethical decisions because of the ethical obligations to clients, the employing agency, and to physicians. Because several people are involved in ethical decision-making, communication and compromise are important skills for all health professionals. Integrity-preserving compromises are likely collaborative decision-making. (Ramont & Niedringhaus, p. 40) 47 Ethical problems nurses encounter most frequently: Cost-containment issues that jeopardize client welfare and access to healthcare (resource allocation) Allocation of Health Resources Allocation of healthcare goods and services (organ transplants, artificial joints, services of specialists) (Ramont & Niedringhaus, p. 42) 48 Nursing care is also a health resource. Most institutions have been implementing “workplace redesign” in order to cut costs. As a result, nursing units are staffed with fewer nurses and more unlicensed care givers. Nurses must continue to look for ways to balance economics and caring in the allocation of health resources. Breaches of confidentiality (computerized information management) Use of advance directives Informed consent and procedures (Ramont & Niedringhaus, p. 42) 49 Ethical problems nurses encounter most frequently: Issues in the care of HIV/AIDS clients: social stigma of AIDS, such as association of HIV/AIDS with sexual behavior, prostitution, illicit drug use, inevitable physical decline & death (Healthcare workers have conflicting feelings of anger, fear, sympathy, fatigue, helplessness, self-enhancement; confidentiality issues; testing HIV status (Ramont & Niedringhaus, pp. 40-41) 50 Abortion: debate between the sanctity of life against the principle of autonomy & woman’s right to control her own body (healthcare workers have no right to impose their values on clients); abortion laws provide specifics Organ transplantation: allocation of organs, selling of body parts, consent, clear definition of death, conflicts of interest between potential donors and recipients, person’s religious beliefs (Ramont & Niedringhaus, pp. 40-41) 51 End-of-life decisions: Euthanasia: “mercy killing” or the “good death” Active euthanasia involves actions to directly bring about the client’s death, with or without client consent. ◦ Example: administration of lethal medication to end the client’s suffering Active euthanasia includes assisted suicide or giving the client the means to kill themselves if they request it (providing the pills or weapon). ◦ Both euthanasia and assisted suicide are in violation of the code of ethics. Passive euthanasia involves the withdrawal of extraordinary means of life support, such as removing a ventilator or making a client a “no code” “do not resuscitate.” ◦ The legality of passive euthanasia depends on the laws of a particular jurisdiction and/or facility, even though not a violation of the ANA code. (Ramont & Niedringhaus, p. 41) 52 End-of-Life Decisions Termination of Life-Sustaining Treatment Antibiotics, organ transplants, and technology advances (ventilators) help to prolong life, but not necessarily to restore health. Clients may have advance directives to provide their healthcare wishes. There is no ethical or legal distinction between the withholding or withdrawing of treatments for the healthcare workers. It’s more difficult for nurses to withdraw treatment than to decide not to begin treatment initially. To withdraw treatment is not to withdraw care, so healthcare workers must ensure that sensitive care & comfort measures are given as the client’s illness progresses. (Ramont & Niedringhaus, pp. 41-42) 53 End-of-Life Issues Withdrawing or Withholding Food & Fluids It is generally accepted that providing food & fluids is part of ordinary nursing practice and therefore, a moral duty. However, when food and fluids are administered by tube to a dying patient, or are given for a long period of time to an unconscious client who is not expected to improve, then some consider it to be an extraordinary, or heroic, measure. A nurse is obligated to withhold food and fluids when it is more harmful to administer them than to withhold them. In addition, “It is morally as well as legally permissible for nurses to honor the refusal of food and fluids by competent patients in their care” (ANA, p. 3, as cited in Ramont & Niedringhaus, p. 42). Nurses Code of Ethics support this position through the nurse’s role as a client advocate and through the moral principle of autonomy. (Ramont & Niedringhaus, p. 42). 54 Advocacy refers to the support of a cause. Healthcare workers advocate for the health, safety, and rights of the client. Safeguard the client’s rights to physical and auditory privacy ◦ For example, one should find a private place for discussion with the client’s health care provider about the results of the client’s diagnostic testing. As a client advocate, follow institutional policies and procedures to report any occurrence of incompetent, unethical, illegal, or impaired practice by any healthcare member that has potential to affect client health or safety. (Potter & Perry, p. 314) 55 The overall goal of the client advocate is to protect client’s rights. Being an effective client advocate is involves: Being assertive Recognizing that the rights and values of client’s and families must take precedence when they conflict with those of healthcare providers Being aware that conflicts may arise over issues that require consultation, confrontation, or negotiation between the healthcare worker and administrative personnel or between the nurse and the physician (Ramont & Niedringhaus, p. 42) 56 The client is a holistic, autonomous being who has the right to make choices and decisions. Clients have the right to expect a healthcare worker-client relationship that is based on shared respect, trust, and collaborating in solving problems related to health and healthcare needs, and consideration of their thoughts and feelings. Clients are responsible for their own health. It is the healthcare provider’s responsibility to ensure the client has access to healthcare services that meet health needs. (Ramont & Niedringhaus, p. 42) 57 The word responsibility refers to a willingness to respect obligations and to follow through on promise. (Potter & Perry, 2009, p. 315) As a healthcare worker, you are responsible for your actions. Responsibility refers to “the specific accountability or liability associated with the performance of duties of a particular role.” (Berman et al., p. 85) You are an active member of the healthcare team and have an active role in shaping healthcare practice, rather than a passive role. Continue to be competent to practice by being dependable, accountable, and responsible to follow through with assigned tasks, promises, etc. Stay current with new equipment, practices, and knowledge by attending required in-services. (Potter & Perry, p. 315) 58 Accountability refers to the ability to answer for one’s own actions to self and others. One should ensure that one’s professional actions are explainable to your clients and your employer. Health care institutions play a role in accountability too, by monitoring individual and institutional compliance with national standards established by The Joint Commission (TJC) and American Nurses Association (ANA). (Potter & Perry, p. 315) The following slides are examples of standards for monitoring and protecting nursing practice. 59 Confidentiality (Respecting Privileged Information) The obligation to observe the privacy of another and to hold certain information in strict confidence. There are time when the presumption against disclosing information must be overridden. For example, health care workers are required by law to report certain cases, such as drug abuse in employees, elder abuse, or child abuse or neglect. (Marquis & Huston, p. 76) Concept of confidentiality in healthcare is widespread in US (Federal legislation-HIPAA) 60 Federal legislation (HIPAA ) mandates the confidential protection of clients’ personal health information. It defines the rights & privileges of clients for protection of privacy without diminishing access to quality care and establishes fines for violation. ◦ For example, you cannot copy or forward medical records without a client’s consent. You cannot share health information including laboratory results, diagnosis, and prognosis with others without specific client consent, unless the information is necessary in the course of providing care. (Marquis & Huston, p. 67) 61 Communication about a client should only take place in a private setting. ◦ When reporting to your supervisor or team leader, go to a private place rather than in the hall or open nurse’s station area where visitors, clients, or others can hear what is being said. (Marquis & Huston, p. 67) 62 Client information may not be disclosed to unauthorized individuals or family members who request it or individuals who call on the phone. Many hospitals use a code system in which information is only disclosed to individuals who can provide the code. The healthcare worker should ask any individual inquiring about a client’s status for the code & disclose information only when an individual can give the code. (Marquis & Huston, p. 76) When medical records are computerized, computer security measures such as special access codes for all authorized users and computer “firewalls” protect systems from unauthorized access. (US Department of Health & Human Services, as cited in Potter & Perry, p. 315) 63 Hospital information systems provide a centralized electronic source for information and allow primary care providers to pull together client information from a variety of sources. Strategies to protect client information Using passwords for access to electronic information (Marquis & Huston,) 64 Prohibiting the sharing of passwords, thus preventing unauthorized access to confidential information. Allowing access of information only to health team members directly involved in a client’s care. Monitoring for breaches in electronic confidentiality and reporting infractions to appropriate officials. Securing placement of paper-based charts to prohibit unauthorized viewing. (Marquis & Huston) 65 Although the client owns the information in the medical record, the actual record belongs to the facility that originally made the record & is storing it. 66 Ethical theory examines the different philosophies, systems, ideas, and principles used to make judgments about what is right and wrong and good and bad. For example: ◦ A person who believes that life is sacred may not be able to sanction the removal of life support services on a client with a severe head injury. ◦ A person who believes that life begins as conception may not support the use of birth control methods that prevent implantation (intrauterine devices, morning after pill). (Marquis & Huston) 67 Ethical dilemmas occur when the choice available include only undesirable alternatives. Ethical decision-making is the use of a systematic approach that enhances decisionmaking and subsequent satisfaction with the decision. (Marquis & Huston) 68 The ability to provide an ethically supportable rationale for decisions and actions is foundational to professional healthcare practice and the integrity of healthcare workers. The first task is to identify whether a situation presents as an ethical dilemma or problem recognizing that the healthcare worker-client relationship always has ethical dimensions whether problematic or not. (Davis, Aroskar, Liaschenko, & Drought p. 47) 69 In other words, every healthcare worker-client relationship has the potential to be an ethical problem or dilemma. (Davis, Aroskar, Liaschenko, & Drought, p. 47) 70 The existence of a conflict of values Obligations, loyalties, interests, or Needs in a patient care situation, such as ◦ Disagreement about treatment between health professionals and patients or health care team members and patients’ families and ◦ Ethical principles or values are at stake, such as respect for patient autonomy, doing the least harm, or the values of caring and patient advocacy; and the situation involves the feelings and values of all key persons involved in the situation. (Davis, Aroskar, Liaschenko, & Drought, p. 47) 71 Once a situation is identified that constitutes an ethical problem consideration for the following elements assists with the discussion, analysis, and development of ethically supportable decisions. (Davis, Aroskar, Liaschenko, & Drought, p. 47) 72 1. 2. 3. 4. 5. Review the overall situation to identify what is going on. Identify significant facts about the client, including the medical, social history, decisionmaking capacity, existence of an advance directive for treatment. Identify the parties or stakeholders involved in the situation or affected by the decision (s) that is made. Identify relevant legal data Identify specific conflicts of ethical principles or values. (Davis, Aroskar, Liaschenko, & Drought, p. 47) 73 6. Identify possible choices, their intent, & probable consequences to the welfare of the client/clients as the primary concern. 7. Identify practical constraints, i.e., legal, organizational, political, economic. 8. Make recommendations for action that are determined to be ethically supportable recognizing that the possible choices often have positive and negative aspects. 9. Take action if your are the decision-maker and implementer of the decision (s) made. 10. Reviews and evaluate the situation after action is taken in order to determine what was learned that will help in resolution of similar situations in client care and related policy development. (Davis, Aroskar, Liaschenko, & Drought, p. 47) 74 Ethical decisions can be made using the following 1. 2. 3. 4. 5. 6. 7. steps (This is the compact version): Identify the ethical problem. Analyze the causes and consequences of the problem. Identify possible solutions. Evaluate each solution in relation to acceptable and unacceptable consequences. Select the perceived appropriate solution. Implement the solution. Evaluate. (Marquis & Huston) 75 Alvare, S., Fuzy, J., & Rymer, S. (2009). Nursing assistant care. Albuquerque, NM: Hartman Publishing, Inc. Berman, A., Snyder, S.J., Kozier, B., & Erb, G. (2008). Values, ethics, and advocacy. In A. Berman, S.J. Snyder, B. Kozier, & G. Erb (Eds.). Kozier & Erb’s Fundamentals of nursing: Concepts, process, and practice (8th ed.) (pp. 80-97). Upper Saddle River, NJ: Prentice Hall Kockrow, E.O.(2006). Medical/Surgical asepsis and infection control. In B.L. Christensen & E. O. Kockrow (Eds.). Foundations and adult health nursing (5th ed.) (pp. 270-314). St. Louis, MO: Elsevier, Mosby 76 Brenneman, L. (2005). Ethics of therapeutic relationships. Retrieved from http://www.ravenwoodpa.com/npceu/fdu/3210/doc/ethics%20of%20therapeutic %20relationships.pdf Marquis, B.L. & Huston, C.J. (2009). Ethical issues. In B.L. Marquis & C.J. Huston (Eds.). Leadership roles and management functions in nursing: theory and application (6th ed.) (pp. 69-92). Philadelphia, PA: Wolters Kluwer/Lippincot Williams & Wilkins Potter, P.A. & Perry, A.G. (2009). Ethics and values. In P.A. Potter & A.G. Perry (Eds.). Fundamentals of nursing (7th ed.) (pp. 313-342). St. Louis, MO: Elsevier, Mosby Ramon, P.R. & Niedringhaus, D. M. (2008). Legal and ethical issues of nursing. Fundamental nursing care (2nd ed.) (pp. 25-44). Upper Saddle River, NJ: Person Prentice Hall 77