perform better when they are participants in an experiment. Individuals may change their behavior due to the attention they are receiving from researchers rather than because of any manipulation of independent variables. The Hawthorne experiments took place from 1927 to 1933 in the Hawthorne plant of Western Electric. They wanted to test scientific management. The experiments were held by Elton Mayo‚ and a few of his colleagues. The experiments began as a series of productivity studies from
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Part I - Illumination Experiments (1924-27) These experiments were performed to find out the effect of different levels of illumination (lighting) on productivity of labour. The brightness of the light was increased and decreased to find out the effect on the productivity of the test group. Surprisingly‚ the productivity increased even when the level of illumination was decreased. It was concluded that factors other than light were also important. Part II - Relay Assembly Test Room Study (1927-1929)
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Introduction Photosynthesis is the process by which autotrophic organisms convert light energy to chemical energy in the form of glucose. Without this process life on earth would be very different because every organism directly or indirectly depends on photosynthesis. Photosynthesis helps the plants to grow roots‚ leaves‚ flowers and fruits. It is an extremely important process because plant tissue serves as the bottom of every food chain. The process of photosynthesis is dictated by a number
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relationship of different wavelengths of light and the rate of photosynthesis in spinach leafs. The rate of photosynthesis was measured every five min under light colors of white‚ green‚ red‚ blue and yellow under a light intensity of 2000 lux. The rate of photosynthesis was measured by the spinach disk method in which we replaced the air from the disks with sodium bicarbonate using a vacuum. Under photosynthesis‚ oxygen‚ a product of photosynthesis‚ replaced the bicarbonate solution‚ made the disks less
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project? Topics: Photosynthesis (chapter 7) and Cellular Respiration (chapter 8) Objectives: to explain and describe the metabolism of photosynthesis reactions and respiration reactions Specific objectives: (each one is a topic project) to explain the overall reactions of photosynthesis and respiration as metabolic pathways and coupled reaction. to explain and describe photosynthesis light dependent reaction and photosystems I and II in the thylacoid to explain and describe photosynthesis light independent
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Introduction: Photosynthesis is the trapping of carbon dioxide and its subsequent reduction to carbohydrate‚ using hydrogen from water. Hexose sugars and starch are commonly formed so the following equation is often used: light energy 6CO2 + 6H2O C6H12O6 + 6O2 carbon dioxide water chlorophyll carbohydrate oxygen Photosynthesis consists of two stages: These are the light-dependent reactions‚ for which light energy is necessary‚ and the light independent reactions series of light-dependent reactions
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Experiment #1: Introduction to Experimentation Submitted by: Neann Klara M. De Jesus BS Psychology II Submitted to: Dr. Geraldine E. Tria ABSTRACT SUMMARY The first experiment done by the class was called “Introduction to Experimentation”. Its main objective is to give basic knowledge about some of the logic of experimentation. The class was divided into groups of 2. In each group there was an experimenter (E) and a subject (S). The experimenter instructed
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electron transport chain because each carrier in the chain has a greater tendency to capture and hold electron than the carrier before it. PHOTOSYNTHESIS Photosynthesis which requires the energy of sunlight by the green chlorophyll pigment for the manufacture of carbonhydrate‚ carbondioxide and H2O. Van Neil propose a general equation for photosynthesis as follows: CO2 + 2H2A light (CH2O) + H2O + 2A Carbon Hydrogen carbonhydrate Water Dioxide donator
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Examine the problems some sociologists may face when using experiments in their research. (20 marks) (January 2009) MODEL ANSWER Experiments are the preferred scientific method. There are two main types of experiments. The classic scientific experiment takes place in a laboratory in controlled conditions. By contrast field experiments take place in more natural but less controlled experiments. Although experiments are very successful in science they are rarely used in Sociology for the following
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The Failure to Escape Traumatic Shock In May of 1967 Martin Seligman and Steven Maier conducted a research Called “Failure to escape traumatic shock”. This experiment involved three groups of dogs. Each group of dogs had a different purpose. Group one was the control group and did not receive a shock. Group two received a shock but was able stop the halter from shocking them by pressing a button. Group three was shocked and was not able to stop the shock‚ they were forced to wait for group two
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