A minature end plate potential (MEPP) is :
Which of the following
A quantal depolarization that occurs at the specialized region of a muscle fiber (end plate) at a neuromuscular junction.
Is produced by the activation of post-synaptic receptors by the ligand acetylcholine (a neurotransmitter)
Causes hyperpolarization of the muscle cell membrane
is the result of sodium and potassium flux through post synaptic acetylcholine receptors
generates an action potential across the muscle fiber membrane© BrainMass Inc. brainmass.com October 24, 2018, 6:34 pm ad1c9bdddf
Of the five options given, more than one is correct. I'll go through each option and let you know why it is or is not correct.
A quantal depolarization that occurs at the specialized region of a muscle fiber (end plate) at a neuromuscular juntction. TRUE This is the definition of an MEPP. It means that a specific measurable response that depolarizes (like an action potential) and ...
Leadership and Motivation Case Study Questions
1. Why is leadership important?
2. What are the five key elements in our leadership definition? How do the elements interrelate to form this definition?
3. Are leaders born or made, and can leadership skills be developed?
4. List and define the interpersonal managerial leadership roles.
5. List and define the informational managerial leadership roles.
6. List and define the decisional managerial leadership roles.
7. List and define the levels of analysis of leadership theory.
8. List and define the leadership theory paradigms.
9. How can the shift in paradigm from management to leadership possibly help—and hurt—the management profession?
10. What are the three-pronged approach objectives to this book?
Steve Jobs: Complete questions 1-5 using Case Study 1 Steve Jobs below.
1. Explain how each of the five elements of our definition of leadership applies to Steve Jobs leading Apple.
2. Identify leadership skills Jobs has that lead to his and Apple's success. Which skill is his strongest?
3. Identify managerial leadership roles played by Jobs as CEO of Apple. Which role was the most important?
4. Which level of analysis is the primary focus of this case?
5. Explain how each of the leadership theory classifications applies to this case, and which one is most relevant.
Case Study 1 Steve Jobs:
At age 21 Steven Jobs coproduced the first PC and Apple Computer, at 25 Jobs was running Apple with a net worth of $25 million, and at age 26 he made the cover of Time magazine. More recently, Steven Jobs was given the title CEO of the decade,116 ranked #1 by Fortune on its list of "Smartest People in Tech," calling him the smartest CEO,117 and he consistently ranks high on its list of "Business-Person of the Year."118 He is also ranked by Forbes in the top 50 of "The Richest People in America."119 Jobs cofounded Apple Computer with Steven Wozniak back in 1976. Today, Apple is ranked #1 on Fortune's "The World's Most Admired Companies,"120 #1 on Business Week's "The 50 Most Innovative Companies,"121 it pulled ahead of its arch rival Microsoft to become the most valuable tech company,122 and its revenue growth rate is near three times that of Microsoft and more than triple that of IBM, HP, and Intel.123 Most of us never have any real influence over any industry, but Jobs is ranked #1 for his leadership and power in influencing five industries: computers, Hollywood, music, retailing, and wireless phones/telcom. So far, no one has had more influence over a broader range of businesses than Jobs.124 Some say that his influence actually transformed these industries.125 Let's trace his business success, and failure, along the way to his earning these titles for himself and Apple as he influenced these five industries. Together with Steve Wozniak, Jobs developed and built the personal computer (PC) in 1976 in Jobs's family garage. The Apple II kicked off the PC era in 1977, and in 1984 the Macintosh altered the direction of the computer industry. Jobs is also credited with desktop publishing, laser printers, and for pioneering personal computer networks. So Jobs was an influential founder of the PC industry. However, as Apple grew through selling stock, Jobs lost controlling ownership of his company. In 1985, Jobs was fired by the board of directors because he was controlling and unmanageable.126 Although considered a failure at this point, Jobs didn't give up and bounced back very quickly. In 1985, Jobs started NeXT (a computer platform development company specializing in the higher education and business markets). In 1986, he started what became Pixar Animated Studios and became its CEO. Jobs contracted with Disney to produce a number of computer-animated feature films, which Disney would cofinance and distribute. Films included Toy Story, A Bug's Life, Monsters, Inc., The Incredibles, and Cars. In 2006, Jobs sold Pixar to Disney and remains on its board as its largest shareholder. In fact, Jobs's shares in Disney are worth more than five times the value of his Apple stock. So Jobs clearly influenced Hollywood films. In 1997, Apple acquired NeXT to use its technology in its Apple computers and Jobs returned to Apple after a 12-year exile. Apple was close to bankruptcy so the board appointed Jobs to his earlier position as CEO. Jobs changed its culture back to a more entrepreneurial atmosphere. Jobs is a visionary, and Apple's success is born of continual and artful innovation in every aspect of its business. According to Jobs, Apple's success comes from simply trying to make great products that we want for ourselves, and then hope that customers love them as much as we do. You are most likely aware of Apple's innovations under Jobs's leadership. Through the iPod and iTunes and Apple Stores Jobs has clearly influenced music and retailing. The iPhone has clearly influenced wireless phones/telecom. Its new iTunes App Store is also set to be very profitable as Apple plans to take a 30 percent cut on any media sales, and if they don't agree, they can be thrown off the devices,127 and its iTunes Match should be a success as well.128 The iPad was months ahead of the largely absent competition in the tablet market. And by the way, Apple never shortchanged its very profitable PC business. The PC market share has increase from 3 percent to 9.7 percent during the last decade,129 and its MacBook Air is transitioning from disk-drive-based laptop computers to the radical flash-memory.130 So PC founder Jobs continues to influence the computer industry. Although Jobs has been so influential in five industries and has been called perhaps the most charismatic CEO in business history,131 Jobs is also among the most controversial figures in business. People who have worked for Jobs over the years have mixed reactions to his leadership style. Some call him temperamental, aggressive, tough, intimidating, and very demanding. He has been known to verbally attack people who make mistakes and are not meeting goals and expectations. He is known as a control freak with a compulsive attention to details. He routinely sends products back to the lab, kills new products in their crib, demands new features or euthanizes old ones.132 He is outspoken and not afraid to anger employees and customers. Even many who feared him also had great respect for him as he did inspire loyalty, enthusiasm, and high levels of performance through continuous innovation. Even people who left Apple say it's often brutal and Jobs hogs the credit, but they've never done better work.133 Jobs dictator-like control can cause havoc for Apple partners too.134 Jobs has publicly criticized Adobe and Microsoft even though they supply Apple with the software for Apple's operating systems. In a combative mood, Jobs launched a public fight with Adobe over Apple's refusal to support Adobe's popular Flash software.135 He has also attracted Samsung, even though it makes some of the most important components Apple buys, including memory chips and displays. Samsung makes the brains inside the iPhone and IPad.136 In his 50s, Jobs has had health problems. In 2009, he took a six-month leave and underwent a liver transplant. In early 2011 he took another leave without saying when he would return or why he was leaving, but stated: "I love Apple so much and hope to be back as soon as I can."137 Although on leave, showman Jobs unexpectedly presented the iPad 2 in San Francisco in March 2011,138 and Jobs still calls the shots from home.139 In June 2011, Jobs took a break from his medical leave again to show off a new online music service called iTunes Match.140 Jobs also attended a Cupertino, California City Council Meeting to personally present the plans for a new massive headquarters to be built by 2015 on 150 acres of land, which he said will look a little like a spaceship.141 On August 24, 2011, Jobs resigned as CEO naming Tim Cook as his successor. Jobs died in October 2011. Many people question, can Apple succeed without Jobs?142 Only time will tell. In any case, Jobs found the secret to career fulfillment—he discovered something he was good at and loved to do. We can't all be another Steve Jobs, but we can find career fulfillment.
1. What are the Big Five dimensions of traits?
2. What is the primary use of personality profiles?
3. What are some of the traits that describe the high energy trait?
4. Is locus of control important to leaders? Why?
5. What does intelligence have to do with leadership?
6. Does sensitivity to others mean that the leader does what the followers want to do?
7. Does McClelland believe that power is good or bad? Why?
8. Should a leader have a dominant need for achievement to be successful? Why or why not?
9. How do attitudes develop leadership styles?
10. Which personality traits are more closely related to ethical and unethical behavior?
11. Do people change their level of moral development based on the situation?
12. Why do people justify their unethical behavior?
Bill and Melinda Gates: Complete questions 1-6 Using Case Study 2 Bill and Melinda Gates below.
1. What do you think Bill and Melinda Gates's personality traits are for each of the Big Five dimensions? Compare the two.
2. Which of the traits of effective leaders would you say has had the greatest impact on Bill and Melinda Gates's success? Compare the two.
3. Which motivation would McClelland say was the major need driving Bill and Melinda Gates to continue to work so hard despite being worth many billions of dollars?
4. Do Bill and Melinda Gates have an LMP? Compare the two.
5. What type of self-concept do Bill and Melinda Gates have, and how does it affect their success?
6. Is Bill Gates ethical in business at Microsoft? Which level of moral development is he on?
Case Study2 Bill and Melinda Gates:
The Bill & Melinda Gates Foundation is guided by the belief that every life has equal value. The Foundation essentially gives money (grants) to other organizations (business, nonprofits, and governments) to support them in implementing the Foundation's work to help all people lead healthy, productive lives. It has three grant-making areas: Global Development Program, Global Health Program, and United States Program. In developing countries, it focuses on improving people's health and giving them the chance to lift themselves out of hunger and extreme poverty. In the United States, it seeks to ensure that all people—especially those with the fewest resources—have access to the opportunities they need to succeed in school and life. The Foundation is headquartered in Seattle, Washington, with offices in Washington, D.C.; Delhi, India; Beijing, China; and London, United Kingdom. It has more than 900 employees, with an asset trust endowment of $37.1 billion, with total grant commitments since inception of $24.81 billion. The Foundation is led by CEO Jeff Raikes and Co-chair William H. Gates Sr., under the direction of Co-chairs and Trustees Bill and Melinda Gates and Trustee Warren Buffett. Bill and Melinda Gates are the founders and together they shape and approve foundation strategies, review results, advocate for the foundation's issues, and help set the overall direction of the organization.72 Before Bill and Melinda were even married, they talked about giving away 95 percent of their wealth during their lifetime. That is why they cofounded and cochair their foundation. They agreed to focus on a few areas of giving, choosing where to place their money by asking two questions: Which problems affect the most people? and Which problems have been neglected in the past? They give where they can effect the greatest change. They have pumped billions into easing the suffering of those plagued by some of the world's deadliest diseases (AIDS, malaria, and tuberculosis) and revitalized failing public high schools in the United States with their financial support. Bill and Melinda will very likely give away more than $100 billion in their lifetime, and they are truly world leaders together. But let's discuss them separately so we can get to know them a bit more. William (Bill) H. Gates, III, was born in 1955 and began programming mainframe computers at age 13. While attending Harvard University, Gates developed a version of the programming language BASIC for the first microcomputer—the MITS Altair. In 1975, Gates and his childhood friend Paul Allen founded Microsoft as a partnership, and it was incorporated in 1981. He invented the software industry, masterminded the rise of the PC, and has hung in there as a force on the Internet. Bill Gates is consistently ranked as the richest man in America valued at $54 billion in 2010 by Forbes,73 and as one of the richest men in the world. He remains Chairman of the Board at Microsoft but retired from day-to-say operations in 2008 to devote most of his time to the Bill & Melinda Gates Foundation. With more time for family, when home, Bill makes time to drop off or pick up his three kids from school every day.74 Bill Gates has an extraordinary capacity for work, having slept under his desk rather than lose minutes away from the office while building Microsoft into the software king it is today.75 He can be abrasive and is known as a demanding boss who encourages creativity and recognizes employee achievements. Several of his early employees are now millionaires. Employees are expected to be well-informed, logical, vocal, and thick-skinned. Teams must present their ideas at "Bill" meetings. During the meetings, Gates often interrupts presentations to question facts and assumptions. He shouts criticisms and challenges team members. Team members are expected to stand up to Gates, giving good logical answers to his questions. He has a personal Web site www.thegatesnotes.com that catalogs his activities and interests. You can also read his tweets on Twitter at twitter.com/BillGates. MelindaFrenchgrewupinDallasinahardworking,middleclassfamily.UnlikeBill,shegraduatedfromcollege,earningaBA(double major in computer science and economics) and an MBA from Duke University. She went to work for Microsoft in 1987; at age 22 she was the youngest recruit and the only woman among ten MBAs. For nine years she was a hotshot who climbed the corporate ladder to become general manager of information products, managing 300 employees. Along the way, Bill asked her out (in the parking lot), which led to their wedding on January 1, 1994. Melinda stopped working at Microsoft after having the first of their three children (Jennifer, Rory, and Phoebe), but she continued to serve on corporate boards, including that of Duke University. Melinda Gates is a total systems thinker who constantly sets and achieves goals. She is known as a strong team builder, who strives for collaboration in decision making. Melinda is loving and charming; she wins people over by being persuasive. She is compassionate and not afraid to get involved as she travels the world to help solve its problems. She held AIDS babies with dirty pants and comforted patients when she visited Mother Teresa's Home for the Dying in India. She has more influence than Bill when it comes to investing their assets in philanthropic projects. She is ranked in the top 30 on The World's 100 Most Powerful Women by Forbes.76
1. Why was there a shift from the trait to the behavioral theory paradigm?
2. How is leadership behavior based on traits?
3. What are the University of Iowa leadership styles?
4. What are the University of Michigan leadership styles?
5. What are the Ohio State University leadership styles?
6. What are three important contributions of the University of Michigan and Ohio State University studies?
7. What are the Leadership Grid leadership styles?
8. What are the three important contributions of the Leadership Grid and high-high research?
9. What is motivation, and why is it important to know how to motivate employees?
10. What are the content motivation theories?
11. What are the process motivation theories?
12. What are the types and schedules of reinforcement theory?
Art Friedman: Complete questions 1-7 using Case Study 3 Art Friedman Below.
1. Which University—Iowa, Michigan, and Ohio State leadership styles did Art Friedman use?
2. Which specific motivation level, factor, and need (from the content motivation theories) applies to Friedmans Appliance?
3. Do equity and expectancy theory apply to this case? Explain.
4. Which type of reinforcement did Friedman use?
5. Do you know of any organizations that use any of Friedman's or other unusual techniques? If yes, what is the organization's name? What does it do?
6. Could Friedman's techniques work in all organizations? Explain your answer.
7. In a position of authority, would you use Friedman's techniques? Which ones?