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Presentation transcript:

9 motivation and emotion

Learning Objective Menu LO 9.1 Instinct and Drive-Reduction Approaches to Motivation LO 9.2 Three Types of Needs LO 9.3 Arousal and Incentive Approaches to Motivation LO 9.4 Maslow’s Hierarchy of Needs LO 9.5 Bodily Causes of Hunger and Social Factors Influencing Hunger LO 9.6 Some Problems in Eating Behavior LO 9.7 Three Elements of Emotion LO 9.8 James-Lange and Cannon-Bard Theories of Emotion LO 9.9 Cognitive Arousal Theory, Facial Feedback Hypothesis and Cognitive-Mediational Theory

LO 9.1 Instinct and Drive-Reduction Approaches to Motivation Motivation: the process by which activities are started, directed, and continued so that physical or psychological needs or wants are met Extrinsic motivation: type of motivation in which a person performs an action because it leads to an outcome that is separate from or external to the person

Instinct Approaches to Motivation LO Instinct and Drive-Reduction Approaches to Motivation Instincts: the biologically determined and innate patterns of behavior that exist in both people and animals Instinct approach: approach to motivation that assumes people are governed by instincts similar to those of animals

Drive-Reduction Theory of Motivation LO 9.1 Instinct and Drive-Reduction Approaches to Motivation Need: a requirement of some material (such as food or water) that is essential for survival of the organism Drive: a psychological tension and physical arousal arising when there is a need that motivates the organism to act in order to fulfill the need and reduce the tension

Drive-Reduction Theory of Motivation LO 9.1 Instinct and Drive-Reduction Approaches to Motivation Drive-reduction theory: approach to motivation that assumes behavior arises from physiological needs that cause internal drives to push the organism to satisfy the need and reduce tension and arousal Primary drives: those drives that involve needs of the body such as hunger and thirst

Drive-Reduction Theory of Motivation LO 9.1 Instinct and Drive-Reduction Approaches to Motivation Acquired (secondary) drives: those drives that are learned through experience or conditioning, such as the need for money or social approval Homeostasis: the tendency of the body to maintain a steady state

Figure 9.1 Homeostasis In homeostasis, the body maintains balance in the body’s physical states. For example, this diagram shows how increased hunger (a state of imbalance) prompts a person to eat. Eating increases the level of glucose (blood sugar), causing the feelings of hunger to reduce. After a period without eating, the glucose levels become low enough to stimulate the hunger drive once again, and the entire cycle is repeated.

Three Types of Needs LO 9.2 Three Types of Needs Need for achievement (nAch): a need that involves a strong desire to succeed in attaining goals—not only realistic ones, but also challenging ones Need for affiliation (nAff): the need for friendly social interactions and relationships with others Need for power (nPow): the need to have control or influence over others

Arousal Approach to Motivation LO 9.3 Arousal and Incentive Approaches to Motivation Stimulus motive: a motive that appears to be unlearned but causes an increase in stimulation, such as curiosity Arousal theory: theory of motivation in which people are said to have an optimal (best or ideal) level of tension that they seek to maintain by increasing or decreasing stimulation

Arousal Approach to Motivation LO 9.3 Arousal and Incentive Approaches to Motivation Yerkes-Dodson law: law stating performance is related to arousal; moderate levels of arousal lead to better performance than do levels of arousal that are too low or too high This effect varies with the difficulty of the task; easy tasks require a high-moderate level, while more difficult tasks require a low-moderate level.

Arousal Approach to Motivation LO 9.3 Arousal and Incentive Approaches to Motivation Sensation seeker: someone who needs more arousal than the average person

Figure 9.2 Arousal and Performance The optimal level of arousal for task performance depends on the difficulty of the task. We generally perform easy tasks well if we are at a high–moderate level of arousal (green) and accomplish difficult tasks well if we are at a low–moderate level (red).

Incentive Approaches to Motivation LO 9.3 Arousal and Incentive Approaches to Motivation Incentives: things that attract or lure people into action Incentive approaches: theories of motivation in which behavior is explained as a response to the external stimulus and its rewarding properties

Incentive Approaches to Motivation LO 9.3 Arousal and Incentive Approaches to Motivation Expectancy-value theories: incentive theories that assume the actions of humans cannot be predicted or fully understood without understanding their beliefs, their values, and the importance that a person attaches to those beliefs and values at any given moment in time

Maslow’s Hierarchy of Needs LO 9.4 Maslow’s Hierarchy of Needs Self-actualization: according to Maslow, the point that is seldom reached at which people have sufficiently satisfied the lower needs and achieved their full human potential Peak experiences: according to Maslow, times in a person’s life during which self-actualization is temporarily achieved

Figure 9.3 Maslow’s Hierarchy of Needs Maslow proposed that human beings must fulfill the more basic needs, such as physical and security needs, before being able to fulfill the higher needs of self-actualization and transcendence.

Self-Determination Theory of Motivation LO 9.4 Maslow’s Hierarchy of Needs Self-determination theory (SDT): theory of human motivation in which the social context of an action has an effect on the type of motivation existing for the action Intrinsic motivation: type of motivation in which a person performs an action because the act itself is rewarding or satisfying in some internal manner

LO 9.5 Bodily Causes of Hunger and Social Factors Influencing Hunger Hunger: Bodily Causes LO 9.5 Bodily Causes of Hunger and Social Factors Influencing Hunger Insulin: a hormone secreted by the pancreas to control the levels of fats, proteins, and carbohydrates in the body by reducing the level of glucose in the bloodstream

LO 9.5 Bodily Causes of Hunger and Social Factors Influencing Hunger Hunger: Bodily Causes LO 9.5 Bodily Causes of Hunger and Social Factors Influencing Hunger Glucagons: hormones that are secreted by the pancreas to control the levels of fats, proteins, and carbohydrates in the body by increasing the level of glucose in the bloodstream Weight set point: the particular level of weight that the body tries to maintain

LO 9.5 Bodily Causes of Hunger and Social Factors Influencing Hunger Hunger: Bodily Causes LO 9.5 Bodily Causes of Hunger and Social Factors Influencing Hunger Basal metabolic rate (BMR): the rate at which the body burns energy when the organism is resting

LO 9.5 Bodily Causes of Hunger and Social Factors Influencing Hunger Hunger: Social Causes LO 9.5 Bodily Causes of Hunger and Social Factors Influencing Hunger Social cues for when meals are to be eaten Cultural customs Food preferences Use of food as a comfort device or escape from unpleasantness

LO 9.5 Bodily Causes of Hunger and Social Factors Influencing Hunger Hunger: Social Causes LO 9.5 Bodily Causes of Hunger and Social Factors Influencing Hunger Some people may respond to the anticipation of eating by producing an insulin response, increasing the risk of obesity.

LO 9.6 Some Problems in Eating Behavior Eating Problems LO 9.6 Some Problems in Eating Behavior Obesity a condition in which the body weight of a person is 20 percent or more over the ideal body weight for that person’s height (actual percents vary across definitions) Anorexia Nervosa a condition in which a person reduces eating to the point that a weight loss of 15 percent below the ideal body weight or more occurs

Figure 9.4 Obese Laboratory Rat This rat has reached a high level of obesity because its ventromedial hypothalamus has been deliberately damaged in the laboratory. The result is a rat that no longer receives signals of being satiated, and so the rat continues to eat and eat and eat.

LO 9.6 Some Problems in Eating Behavior Eating Problems LO 9.6 Some Problems in Eating Behavior Bulimia a condition in which a person develops a cycle of “binging,” or overeating enormous amounts of food at one sitting, and “purging,” or deliberately vomiting after eating

Biological Factors of Eating Problems LO 9.6 Some Problems in Eating Behavior Leptin: a hormone that, when released into the bloodstream, signals the hypothalamus that the body has had enough food and reduces the appetite while increasing the feeling of being full role of leptin in obesity genetics and obesity Genetics may play a part in anorexia and bulimia, as well as insensitivity to leptin.

LO 9.7 Three Elements of Emotion Emotion: the “feeling” aspect of consciousness; characterized by a certain physical arousal, a certain behavior that reveals the emotion to the outside world, and an inner awareness of feelings Display rules: learned ways of controlling displays of emotion in social settings

Figure 9.5 Facial Expressions of Emotion Facial expressions appear to be universal. For example, these faces are consistently interpreted as showing (a) anger, (b) fear, (c) disgust, (d) happiness, (e) surprise, and (f) sadness by people of various cultures from all over the world. Although the situations that cause these emotions may differ from culture to culture, the expression of particular emotions remains strikingly the same.

Common Sense Theory of Emotion LO 9.7 Three Elements of Emotion Common sense theory of emotion: a stimulus leads to an emotion, which then leads to bodily arousal

Figure 9.6 Common Sense Theory of Emotion In the common sense theory of emotion, a stimulus (snarling dog) leads to an emotion of fear, which then leads to bodily arousal (in this case, indicated by shaking) through the autonomic nervous system (ANS).

James-Lange Theory of Emotion LO 9.8 James-Lange and Cannon-Bard Theories of Emotion James-Lange theory of emotion: theory in which a physiological reaction leads to the labeling of an emotion

Figure 9.7 James-Lange Theory of Emotion In the James-Lange theory of emotion, a stimulus leads to bodily arousal first, which is then interpreted as an emotion.

Cannon-Bard Theory of Emotion LO 9.8 James-Lange and Cannon-Bard Theories of Emotion Cannon-Bard theory of emotion: theory in which the physiological reaction and the emotion are assumed to occur at the same time

Figure 9.8 Cannon-Bard Theory of Stimulus First response Second response Emotion In the Cannon-Bard theory of emotion, a stimulus leads to activity in the brain, which then sends signals to arouse the body and interpret the emotion at the same time.

Cognitive Arousal Theory of Emotion LO 9.9 Cognitive Arousal Theory, Facial Feedback Hypothesis and Cognitive-Mediational Theory Cognitive arousal theory: theory of emotion in which both the physical arousal and the labeling of that arousal based on cues from the environment must occur before the emotion is experienced

Figure 9.9 Schachter-Singer Cognitive Arousal Theory of Emotion Schachter and Singer’s cognitive arousal theory is similar to the James-Lange theory but adds the element of cognitive labeling of the arousal. In this theory, a stimulus leads to both bodily arousal and the labeling of that arousal (based on the surrounding context), which leads to the experience and labeling of the emotional reaction.

Facial Feedback Hypothesis LO 9.9 Cognitive Arousal Theory, Facial Feedback Hypothesis and Cognitive-Mediational Theory Facial feedback hypothesis: theory of emotion that assumes that facial expressions provide feedback to the brain concerning the emotion being expressed, which in turn causes and intensifies the emotion

Figure 9.10 Facial Feedback Theory of Emotion In the facial feedback theory of emotion, a stimulus such as this snarling dog causes arousal and a facial expression. The facial expression then provides feedback to the brain about the emotion. The brain then interprets the emotion and may also intensify it.

Cognitive Mediational Theory LO 9.9 Cognitive Arousal Theory, Facial Feedback Hypothesis and Cognitive-Mediational Theory Cognitive-mediational theory: theory of emotion in which a stimulus must be interpreted (appraised) by a person in order to result in a physical response and an emotional reaction

Figure 9.11 Lazarus’s Cognitive- Mediational Theory In Lazarus’s cognitive-mediational theory of emotion, a stimulus causes an immediate appraisal (e.g., “The dog is snarling and not behind a fence, so this is dangerous”). The cognitive appraisal results in an emotional response, which is then followed by the appropriate bodily response.

Figure 9.12 Comparison of Theories of Emotion These figures represent the six different theoriesof emotion as discussed in the text.

Figure 9.12 (continued) Comparison of Theories of Emotion These figures represent the six different theoriesof emotion as discussed in the text.

Three Brain Regions Coordinate Emotional Responses The hypothalamus vital link between higher-order cognition (forebrain) and the lower brain (homeostatic control of the body) The limbic system (amygdala) Two distinct neural circuits produce emotional responses, particularly fear The cerebral cortex Important for the subjective experience of emotions

Cognition and Emotion The brain’s shortcut for emotions

Emotional Arousal

Lie Detectors Polygraph machine commonly used in attempts to detect lies measures several arousal responses that accompany emotion perspiration heart rate blood pressure breathing changes

Emotion - Lie Detectors Control question Relevant (a) (b) Respiration Perspiration Heart rate

Emotion - Lie Detectors Percentage Innocent people Guilty 80 70 60 50 40 30 20 10 Judged innocent by polygraph Judged guilty by polygraph 50 Innocents 50 Thieves 1/3 of innocent declared guilty 1/4 of guilty declared innocent (from Kleinmuntz & Szucko, 1984)

Subjective Well-Being self-perceived happiness or satisfaction with life used along with measures of objective well-being physical and economic indicators to evaluate people’s quality of life

Experiencing Emotion Does money buy happiness? Average per-person Year 100% 90% 80% 70% 60% 50% 40% 30% 20% 10% 0% Average per-person after-tax income in 1995 dollars Percentage describing themselves as very happy $20,000 $19,000 $18,000 $17,000 $16,000 $15,000 $14,000 $13,000 $12,000 $11,000 $10,000 $9,000 $8,000 $7,000 $6,000 $5,000 $4,000 1930 1940 1950 1960 1970 1980 1990 2000 Percentage very happy Personal income

Experiencing Emotion Values and life satisfaction 0.6 0.4 0.2 Money Love 1.00 2.00 3.00 4.00 5.00 6.00 7.00 Life satisfaction 0.6 0.4 0.2 0.0 -0.2 -0.4 Importance scores

Experiencing Emotion However, Happiness Seems Not Much Researchers Have Found That Happy People Tend to Have high self-esteem (in individualistic countries) Be optimistic, outgoing, and agreeable Have close friendships or a satisfying marriage Have work and leisure that engage their skills Have a meaningful religious faith Sleep well and exercise However, Happiness Seems Not Much Related to Other Factors, Such as Age Gender (women are more often depressed, but also more often joyful) Education levels Parenthood (having children or not) Physical attractiveness

Experiencing Emotion Adaptation-Level Phenomenon Relative Deprivation tendency to form judgments relative to a “neutral” level brightness of lights volume of sound level of income defined by our prior experience Relative Deprivation perception that one is worse off relative to those with whom one compares oneself