By K. Barrack. Indiana State University.
The results from this study suggested a strong association between an increase in both car ownership and televi- sion viewing and an increase in obesity (see Figure 15 discount 20gm cleocin gel otc. They commented that ‘it seems reasonable to conclude that the low levels of physical inactivity now prevalent in Britain must play an important cleocin gel 20gm line, perhaps dominant role in the development of obesity by greatly reducing energy needs’ (Prentice and Jebb 1995). Therefore, it remains unclear whether obesity and physical activity are related (the third factor problem – some other variable may be determining both obesity and activity) and whether decreases in activity cause increases in obesity or whether, in fact, increases in obesity actually cause decreases in activity. In addition, the data is at the population level and therefore could miss important individual diﬀer- ences (i. In an alternative approach to assessing the relationship between activity and obesity a large Finnish study of 12,000 adults examined the association between levels of physical activity and excess weight gain over a ﬁve-year follow-up period (Rissanen et al. The results showed that lower levels of activity were a greater risk factor for weight gain than any other baseline measures. However, although this data was pro- spective it is still possible that a third factor may explain the relationship (i. Unless experimental data is collected, conclusions about causality remain problematic. Research has also examined the relationship between activity and obesity using a cross-sectional design to examine diﬀerences between the obese and non-obese. In particular, several studies in the 1960s and 1970s examined whether the obese exercised less than the non-obese. They reported that during swimming the obese girls spent less time swimming and more time ﬂoating, and while playing tennis the obese girls were inactive for 77 per cent of the time compared with the girls of normal weight, who were inactive for only 56 per cent of the time. In addition, research indicates that the obese walk less on a daily basis than the non-obese and are less likely to use stairs or walk up escalators. However, whether reduced exercise is a cause or a consequence of obesity is unclear. The relationship between exercise and food intake is complex, with research suggesting that exercise may increase, decrease or have no eﬀect on eating behaviour. For example, a study of middle-aged male joggers who ran approximately 65km per week, suggested that increased calorie intake was related to increased exercise with the joggers eating more than the sedentary control group (Blair et al. However, another study of military cadets reported that decreased food intake was related to increased exercise (Edholm et al. Much research has also been carried out on rats, which shows a more consistent relationship between increased exercise and decreased food intake. However, the extent to which such results can be generalized to humans is questionable. For example, 10 minutes of sleeping uses up to 16 kcals, standing uses 19 kcals, running uses 142 kcals, walking downstairs uses 88 kcals and walking upstairs uses 229 kcals (Brownell 1989). In addition, the amount of calories used increases with the individual’s body weight. However, the number of calories exercise burns up is relatively few com- pared with those in an average meal. However, only intense and prolonged exercise appears to have an eﬀect on metabolic rate. There appears to be an association between population decreases in activity and increases in obesity. In addition, prospective data support this association and highlight lower levels of activity as an important risk factor. Further, cross-sectional data indicate that the obese appear to exercise less than the non-obese. It is possible that an unidentiﬁed third factor may be creating this association, and it is also debatable whether exercise has a role in reducing food intake and promoting energy expenditure. However, exercise may have psychological eﬀects, which could beneﬁt the obese either in terms of promoting weight loss or simply by making them feel better about themselves (see Chapter 7 for the eﬀects of exercise on mood). Eating behaviour In an alternative approach to understanding the causes of obesity, research has exam- ined eating behaviour. Research has asked ‘Are changes in food intake associated with changes in obesity? The results from this data- base illustrate that, although overall calorie consumption increased between 1950 and 1970, since 1970 there has been a distinct decrease in the amount we eat (see Figure 15. Prentice and Jebb (1995) examined the association between changes in food intake in terms of energy intake and fat intake and changes in obesity. Their results indicated no obvious association between the increase in obesity and the changes in food intake (see Figure 15. Therefore, using population data there appears to be no relationship between changes in food intake and changes in obesity. Throughout the 1960s and 1970s theories of eating behaviour emphasized the role of food intake in predicting weight. Original studies of obesity were based on the assumption that the obese ate for diﬀerent reasons than people of normal weight (Ferster et al. Schachter’s externality theory suggested that, although all people were responsive to environmental stimuli such as the sight, taste and smell of food, and that such stimuli might cause overeating, the obese were highly and sometimes uncontrollably responsive to external cues.
Te dentist complained about how strenuously and thoroughly the defense attor- ney grilled him while he was on the witness stand order 20gm cleocin gel with visa. Te stairways had been closed and chained to prevent the “lower-class ticket holders” from coming downstairs quality 20 gm cleocin gel. Also, the out- side doors opened inward, a popular design of the day, but one that proved disastrous when frightened throngs pushed others against the doors, prevent- ing their opening. Cigrand stated in his article that “hundreds” were “unmistakably identifed” from their dental records. In the 1905 case in Germany, a robber bit into the cheese then lef it on a windowsill. Te store worker was arrested, but requested in court that his mouth be examined again, revealing that he had a broken tooth, the crown was missing, leaving only the root. Residents of the small village of Caleu mistook a group of German tourists for bandits and, fearing an attack, fred upon them. In the ensuing disagreements with German ofcials, the German consulate in Valparaiso was set on fre. Shortly afer this fre, the German litigation building in Santiago burned to the ground. William Becker, according to clothing, a wedding ring (with his wife’s initials in it), a watch, and glasses. Two German 20 Forensic dentistry physicians, members of the faculty of Santiago University, performed a second autopsy. Te anterior teeth were severely burned, but the posterior portion of the remaining dentition was described and charted. During this time, news was given that a consid- erable amount of money was missing from the consulate. A Chilean dentist was then asked by a judge in the case to examine the body and any pertinent records. Becker may have murdered him, dressed him with his own clothes and personal efects, and burned the anterior portion of his face to hide the fact that the secretary had gold bridgework. Law enforcement ofcials were alerted and the sec- retary was captured at a border crossing, trying to escape into Argentina. Becker was able to travel from Santiago into the mountains by wearing dark glasses and a handkerchief, hiding his identity by simulating a toothache. Tis eased the problems between Chile and Germany, and the relationship between the two nations was repaired. He num- bered permanent teeth from one to eight from the anterior midline and dis- tinguished the quadrants by placing the numbers in segments of a cross. Numbering the teeth in this manner, starting with the upper-right third molar (1) and ending with the lower-right third molar (32), is commonly known as the universal system and is widely used in the United States. Keith Simpson describes a most interesting case in which dentures were use- ful for the identifcation of a body placed in an acid bath. A wealthy widow, living in a hotel in England, went out for an afernoon with a John Haig, who lived in the same hotel. Haig showed he had a police record and led to a two-story shed he used for what he called “experi- ments. During his interrogation, Haig admitted killing the widow and said he destroyed her body in acid. Afer a fourth sifing of a pile of black slush found behind the shed, a set of upper and lower dentures was found. Haig admitted to the murder, as the dentures were made totally of acrylic resin and would have dissolved completely, given enough time. A dentist was able to identify the individual by the use of this particular type of denture teeth. Tey proposed twenty-three points of skin thickness measurements, which they provided in the form of a table. Sof materials were then used to sculpt the face, a technique that has been widely used and is still used with modif- cations today. Tey had in fact died together in 1945, but 22 Forensic dentistry their bodies had been burned and then buried in secret by Russian soldiers. Due to a lack of antemortem and postmortem records, it was a challenge to dispel the rumors. Finally, pieces of Hitler’s jaw were found that showed remnants of a bridge, as well as unusual forms of reconstruction, and evi- dence of periodontal disease. Hitler’s identity was confrmed when the dental work matched the records kept by Hitler’s dentist, Hugo Blaschke. State case in Texas in 1954 marked the frst time that this type of dental evidence was used in court in the United States.
Psychologist Edward Thorndike developed the law of effect: the idea that responses that are reinforced are “stamped in‖ by experience and thus occur more frequently generic cleocin gel 20gm on-line, whereas responses that are punishing are “stamped out‖ and subsequently occur less frequently order 20 gm cleocin gel with visa. Skinner (1904–1990) expanded on Thorndike‘s ideas to develop a set of principles to explain operant conditioning. Positive reinforcement strengthens a response by presenting a something pleasant after the response, and negative reinforcement strengthens a response by reducing or removing something unpleasant. Positive punishment weakens a response by presenting something unpleasant after the response, whereas negative punishment weakens a response by reducing or removing something pleasant. Partial-reinforcement schedules are determined by whether the reward is presented on the basis of the time that elapses between rewards (interval) or on the basis of the number of responses that the organism engages in (ratio), and by whether the reinforcement occurs on a regular (fixed) or unpredictable (variable) schedule. Not all learning can be explained through the principles of classical and operant conditioning. Insight is the sudden understanding of the components of a problem that makes the solution apparent, and latent learning refers to learning that is not reinforced and not demonstrated until there is motivation to do so. Learning by observing the behavior of others and the consequences of those behaviors is known as observational learning. Learning theories can and have been applied to change behaviors in many areas of everyday life. Some advertising uses classical conditioning to associate a pleasant response with a product. Rewards are frequently and effectively used in education but must be carefully designed to be contingent on performance and to avoid undermining interest in the activity. Social dilemmas, such as the prisoner‘s dilemma, can be understood in terms of a desire to maximize one‘s outcomes in a competitive relationship. One night a man broke into her apartment, put a knife to her throat, and raped her. Thompson studied her rapist throughout the incident with great determination to memorize his face. I looked at his hairline; I looked for scars, for tattoos, for anything that would help me identify him. Thompson went to the police that same day to create a sketch of her attacker, relying on what she believed was her detailed memory. Thompson identified Ronald Cotton as the rapist, and she later testified against him at trial. Consumed by guilt, Thompson sought out Cotton when he was released  from prison, and they have since become friends (Innocence Project, n. Picking Cotton: A Memoir of Injustice and Redemption Although Jennifer Thompson was positive that it was Ronald Cotton who had raped her, her memory was inaccurate. Jennifer Thompson is not the only person to have been fooled by her memory of events. And in more than three-quarters of these cases, the cause of  the innocent people being falsely convicted was erroneous eyewitness testimony (Wells, Memon, & Penrod, 2006). Eyewitness Testimony Watch this video for Lesley Stahl’s 60 Minutes segment on this case. The two subjects of this chapter are memory, defined as the ability to store and retrieve information over time, and cognition, defined as the processes of acquiring and using knowledge. It is useful to consider memory and cognition in the same chapter because they work together to help us interpret and understand our environments. Memory and cognition represent the two major interests of cognitive psychologists. The cognitive approach became the most important school of psychology during the 1960s, and the field of psychology has remained in large part cognitive since that time. The cognitive school was influenced in large part by the development of the electronic computer, and although the differences between computers and the human mind are vast, cognitive psychologists have used the computer as a model for understanding the workings of the mind. Differences between Brains and Computers In computers, information can be accessed only if one knows the exact location of the memory. In the brain, information can be accessed through spreading activation from closely related concepts. Although this is changing as new computers are developed, most computers are primarily serial—they finish one task before they start another. In the brain, the processes of short-term memory and long-term memory are distinct. In the brain (but not in computers) existing memory is used to interpret and store incoming information, and retrieving information from memory changes the memory itself. The brain is estimated to have 25,000,000,000,000,000 (25 million billion) interactions among axons, dendrites, neurons, and neurotransmitters, and that doesn‘t include the approximately 1 trillion glial cells that may also be important for information processing and memory. Although cognitive psychology began in earnest at about the same time that the electronic computer was first being developed, and although cognitive psychologists have frequently used the computer as a model for understanding how the brain operates, research in cognitive neuroscience has revealed many important differences between brains  and computers. The neuroscientist Chris Chatham (2007) provided the list of differences between brains and computers shown here. You might want to check out the website and the responses to it athttp://scienceblogs.
I was in that burn support group cleocin gel 20gm lowest price, and I admit there were some people who had nice relationships after they’d been burned buy cheap cleocin gel 20 gm line. And I guess the thought is doing me more harm than good because it keeps me from ever considering a relationship. After Jeremy reﬂects on the list of Prosecutor Investigative Questions, his therapist advises him to take another look at his Thoughts on Trial Worksheet and try to add more evidence and logic to his case (see Worksheet 6-5). Worksheet 6-5 Jeremy’s Revised Thought on Trial Worksheet Accused thought: I couldn’t stand to see the look of repulsion on her face. Actually, there are a few people I know who haven’t been shocked or repulsed by my scars. I’ve seen the look of shock on people’s My family seems to have gotten faces before. If they can, it’s certainly possible that others could do the same — especially if they cared about me. I can remember my mother crying when Just because my mother cried she saw how badly I was burned. Chapter 6: Indicting and Rehabilitating Thoughts 81 Defending the Thought Prosecuting the Thought After one surgery, a physical therapist The physical therapist was right in made a comment that my burns were that I do have to live with this. But permanently deforming and I’d just have that doesn’t mean I can’t have a to learn to live with them. Sometimes when I go for a checkup, I My burns are noticeable; it doesn’t hear people talking about me. If someone really likes and cares about me, she ought to be able to look past my scars. At this point, Jeremy carefully reviews the case presented in his Revised Thought on Trial Worksheet. He and his therapist agree to work on a replacement thought for his most malicious thought (see the sec- tion “After the Verdict: Replacing and Rehabilitating Your Thoughts” later in this chapter). After he creates the ﬁrst replacement though, he continues putting his other malicious thoughts on trial and replacing them, one at a time. Putting your thoughts on trial You guessed it; it’s your turn to visit Thought Court. Don’t be concerned if you struggle in your initial attempts; this important exercise takes practice. Pay attention to your body’s signals and write them down whenever you feel some- thing unpleasant. Refer to the Daily Unpleasant Emotions Checklist in Chapter 4 for help ﬁnding the right feeling words. Rate your feeling on a scale of intensity from 1 (almost undetectable) to 100 (maximal). Ask yourself what was going on when you started noticing your emotions and your body’s signals. The corresponding event can be something happening in your world, but an event can also be in the form of a thought or image that runs through your mind. Be concrete and speciﬁc; don’t write something overly general such as “I hate my work. Refer to The Thought Query Quiz in Chapter 4 if you experience any difﬁculty ﬁguring out your thoughts about the event. Review your thoughts and write down the thought or thoughts that evoke the great- est amount of emotion — your most malicious thoughts. Worksheet 6-6 My Thought Tracker Feelings & Sensations Corresponding Events Thoughts/Interpretations (Rated 1–100) Chapter 6: Indicting and Rehabilitating Thoughts 83 My most malicious thoughts: 1. In time, you’re likely to start changing the way you think and, therefore, the way you feel. Take a malicious thought and consider the Prosecutor’s Investigative Questions in Worksheet 6-3. After you put one thought on trial using the instructions that follow, proceed to put other malicious thoughts through the same process. In Worksheet 6-8, designate one of your most malicious thoughts as the accused thought and write it down. In the left-hand column, write all the reasons, evidence, and logic that support the truth of your accused thought. In the right-hand column, write refutations of all the reasons, evidence, and logic presented by the defense. After all, you need to use the Thought Court method numerous times to feel the full beneﬁt. After you complete the Thought Court process, decide for yourself whether or not your thought is guilty of causing you unneeded emotional distress such as anxiety, depression, or other difﬁcult feelings. Even if you conclude that your thought has some grain of truth, you’re likely to discover that it’s highly suspect of causing you more harm than good.
Early in 2008, Sue Clark brought a handful of epigenetics researchers from Australia together to form the Australian Epigenetics Alliance. The AEpiA has now grown to a membership of nearly 300, with members spanning not only Australasia, but the globe. Last year we hosted our seventh flagship conference, Epigenetics 2017 in Brisbane, QLD, and the WA team are already busy preparing for Epigenetics 2019 – watch this space!
Past Epigenetics meetings: