Dement and Kleitman - Eye movements in sleep - Psych Tutor.
This post presents and illustrates the Dement and Kleitman Research (sleep and dreams) as per the requirements of the IB IGCSE AS 9990 syllabus including the study's background, aims, research method, measured and manipulated variables, controls, sample characteristics, results, findings, conclusions, strengths and weaknesses, ethics, and evaluation. It also includes an explanation of keyterms.
Dement and Kleitman. STUDY. Flashcards. Learn. Write. Spell. Test. PLAY. Match. Gravity. Created by. yohannatorres. Terms in this set (45) Electroencephalograph (EEG)-Type of brain scan that measures and records electrical activity in the brain using electrodes-Electrodes are attached to a machine which measures your electrical impulses-What are the electrodes?--Small metal discs that detect.
DEMENT AND KLEITMAN 1957 The relation of eye movements during sleep to dream activity: an objective method for the study of dreaming There are 5 stages of sleep. Each one occurs in a recurring cycle of 90 to 110 minuets. Brain activity can be recorded by an EEG.
The Dement and Kleitman Page Below is a very brief summary of the Dement and Kleitman study. You will need to use the more detailed summary here to revise for the exam. You can also find all of the past exam questions on Dement and Kleitman's study here. This great picture is of Nathaniel Kleitman serving as a subject in one of his own sleep experiments.
The study by Schachter and Singer (1962) investigates emotions and their two-factor theory argues that we experience emotions as an interaction between physiological and psychological variables. Dement and Kleitman's (1957) study investigates what happens when we sleep and Sperry (1968) investigates the behaviour and experiences of people who have had their brains separated into two halves.
Evaluation is often demanded in questions at the AS level, and before outlining a method as the student has done in section (a) of this answer, s(he) should be confident about knowing what (s)he is suggesting thoroughly. This is also a reason why applying what has been learnt in a study of the syllabus is the best option for an application-based answer. An example answer to the question stated.
Much sleep deprivation research has focused on the restorative nature of REM sleep. Unlike total sleep deprivation, REM sleep deprivation (or REM starvation) causes the sleeper to increase the frequency of REM sleep each night.This REM rebound effect suggests that REM sleep has an important function as sleepers try to catch up on what they have missed (Dement, 1960).
The essay (final question) requires four evaluation points to be in depth (two strengths and two weaknesses) with at least one of these about the named issue. General comments The marks achieved by the candidates sitting this examination covered a wide spread of possible marks. Some candidates provided a range of excellent answers to many of the questions and could explain psychological.
Scientists (including psychologists) are drawn to reductionist explanations as a method of research. For example, most experimental psychology is based on the assumption that human behaviour can be studied effectively in relatively simple experiments, where complex behaviour is reduced to isolated variables (known as experimental reductionism).
Each study has its own page on the site, which you can find using the links at the top. There is also a page for each approach. It is crucial that, as well as knowing the studies, you understand the key ideas and methods of each of the five approaches, and that you can evaluate these using some of the issues, debates and perspectives in the specification (see below).
Ultradian rhythms last fewer than 24 hours and can be found in the pattern of human sleep. This cycle alternates between REM (rapid eye movement) and NREM (non-rapid movement) sleep and consists of five stages. The cycle starts at light sleep, progressing to deep sleep and then REM sleep, where brain waves speed up and dreaming occurs. This repeats itself about every 90 minutes throughout the.
The essay (final question) requires four evaluation points to be in depth (two strengths and two weaknesses) with at least one of these about the named issue. General comments The marks achieved covered a wide spread of possible marks. A range of excellent answers were provided to many of the questions and could candidates could explain psychological terminology well, providing evidence that.
Adopting the case study approach to the research is very useful in this research study because conclusions based on data collected. This approach will reveal critical analysis of recruitment and selection process as tool of diversity management .in the public sector organization in Pakistan, Yin (2002) suggests that the approach of case studies is very relevant if the researcher wants.
