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❶Quasi-experimental design refers especially to situations precluding random assignment to different conditions.

Psychology Glossary

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The name industrial and organizational psychology I—O arose in the s and became enshrined as the Society for Industrial and Organizational Psychology , Division 14 of the American Psychological Association, in Personnel psychology, a subfield of I—O psychology, applies the methods and principles of psychology in selecting and evaluating workers. I—O psychology's other subfield, organizational psychology , examines the effects of work environments and management styles on worker motivation, job satisfaction , and productivity.

One role for psychologists in the military is to evaluate and counsel soldiers and other personnel. S Army psychology includes psychological screening, clinical psychotherapy, suicide prevention , and treatment for post-traumatic stress, as well as other aspects of health and workplace psychology such as smoking cessation. Psychologists may also work on a diverse set of campaigns known broadly as psychological warfare.

Psychologically warfare chiefly involves the use of propaganda to influence enemy soldiers and civilians. In the case of so-called black propaganda the propaganda is designed to seem like it originates from a different source. Medical facilities increasingly employ psychologists to perform various roles. A prominent aspect of health psychology is the psychoeducation of patients: Health psychologists can also educate doctors and conduct research on patient compliance.

Psychologists in the field of public health use a wide variety of interventions to influence human behavior. These range from public relations campaigns and outreach to governmental laws and policies. Psychologists study the composite influence of all these different tools in an effort to influence whole populations of people. Black American psychologists Kenneth and Mamie Clark studied the psychological impact of segregation and testified with their findings in the desegregation case Brown v.

Board of Education Positive psychology is the study of factors which contribute to human happiness and well-being, focusing more on people who are currently healthy. In , Clinical Psychological Review published a special issue devoted to positive psychological interventions, such as gratitude journaling and the physical expression of gratitude.

Positive psychological interventions have been limited in scope, but their effects are thought to be superior to that of placebos , especially with regard to helping people with body image problems. Quantitative psychological research lends itself to the statistical testing of hypotheses. Although the field makes abundant use of randomized and controlled experiments in laboratory settings, such research can only assess a limited range of short-term phenomena.

Thus, psychologists also rely on creative statistical methods to glean knowledge from clinical trials and population data. The measurement and operationalization of important constructs is an essential part of these research designs. A true experiment with random allocation of subjects to conditions allows researchers to make strong inferences about causal relationships.

In an experiment, the researcher alters parameters of influence, called independent variables , and measures resulting changes of interest, called dependent variables. Prototypical experimental research is conducted in a laboratory with a carefully controlled environment. Repeated-measures experiments are those which take place through intervention on multiple occasions. In research on the effectiveness of psychotherapy , experimenters often compare a given treatment with placebo treatments, or compare different treatments against each other.

Treatment type is the independent variable. The dependent variables are outcomes, ideally assessed in several ways by different professionals. Quasi-experimental design refers especially to situations precluding random assignment to different conditions.

Researchers can use common sense to consider how much the nonrandom assignment threatens the study's validity. Psychologists will compare the achievement of children attending phonics and whole language classes. Experimental researchers typically use a statistical hypothesis testing model which involves making predictions before conducting the experiment, then assessing how well the data supports the predictions. These predictions may originate from a more abstract scientific hypothesis about how the phenomenon under study actually works.

Analysis of variance ANOVA statistical techniques are used to distinguish unique results of the experiment from the null hypothesis that variations result from random fluctuations in data. Statistical surveys are used in psychology for measuring attitudes and traits, monitoring changes in mood, checking the validity of experimental manipulations, and for other psychological topics.

Most commonly, psychologists use paper-and-pencil surveys. However, surveys are also conducted over the phone or through e-mail. Web-based surveys are increasingly used to conveniently reach many subjects.

Neuropsychological tests , such as the Wechsler scales and Wisconsin Card Sorting Test , are mostly questionnaires or simple tasks used which assess a specific type of mental function in the respondent. These can be used in experiments, as in the case of lesion experiments evaluating the results of damage to a specific part of the brain.

Observational studies analyze uncontrolled data in search of correlations; multivariate statistics are typically used to interpret the more complex situation. Cross-sectional observational studies use data from a single point in time, whereas longitudinal studies are used to study trends across the life span. Longitudinal studies track the same people, and therefore detect more individual, rather than cultural, differences. However, they suffer from lack of controls and from confounding factors such as selective attrition the bias introduced when a certain type of subject disproportionately leaves a study.

Exploratory data analysis refers to a variety of practices which researchers can use to visualize and analyze existing sets of data. In Peirce's three modes of inference , exploratory data anlysis corresponds to abduction , or hypothesis formation. A classic and popular tool used to relate mental and neural activity is the electroencephalogram EEG , a technique using amplified electrodes on a person's scalp to measure voltage changes in different parts of the brain.

Hans Berger , the first researcher to use EEG on an unopened skull, quickly found that brains exhibit signature " brain waves ": Researchers subsequently refined statistical methods for synthesizing the electrode data, and identified unique brain wave patterns such as the delta wave observed during non-REM sleep.

Newer functional neuroimaging techniques include functional magnetic resonance imaging and positron emission tomography , both of which track the flow of blood through the brain. These technologies provide more localized information about activity in the brain and create representations of the brain with widespread appeal. They also provide insight which avoids the classic problems of subjective self-reporting. It remains challenging to draw hard conclusions about where in the brain specific thoughts originate—or even how usefully such localization corresponds with reality.

However, neuroimaging has delivered unmistakable results showing the existence of correlations between mind and brain. Some of these draw on a systemic neural network model rather than a localized function model. Psychiatric interventions such as transcranial magnetic stimulation and drugs also provide information about brain—mind interactions.

Psychopharmacology is the study of drug-induced mental effects. Computational modeling is a tool used in mathematical psychology and cognitive psychology to simulate behavior. Since modern computers process information quickly, simulations can be run in a short time, allowing for high statistical power.

Modeling also allows psychologists to visualize hypotheses about the functional organization of mental events that couldn't be directly observed in a human. Computational neuroscience uses mathematical models to simulate the brain. Another method is symbolic modeling, which represents many mental objects using variables and rules. Other types of modeling include dynamic systems and stochastic modeling. Animal experiments aid in investigating many aspects of human psychology, including perception, emotion, learning, memory, and thought, to name a few.

In the s, Russian physiologist Ivan Pavlov famously used dogs to demonstrate classical conditioning. Non-human primates , cats, dogs, pigeons, rats , and other rodents are often used in psychological experiments.

Ideally, controlled experiments introduce only one independent variable at a time, in order to ascertain its unique effects upon dependent variables.

These conditions are approximated best in laboratory settings. In contrast, human environments and genetic backgrounds vary so widely, and depend upon so many factors, that it is difficult to control important variables for human subjects. There are pitfalls in generalizing findings from animal studies to humans through animal models. Comparative psychology refers to the scientific study of the behavior and mental processes of non-human animals, especially as these relate to the phylogenetic history, adaptive significance, and development of behavior.

Research in this area explores the behavior of many species, from insects to primates. It is closely related to other disciplines that study animal behavior such as ethology. Research designed to answer questions about the current state of affairs such as the thoughts, feelings, and behaviors of individuals is known as descriptive research.

Descriptive research can be qualitative or quantitative in orientation. Qualitative research is descriptive research that is focused on observing and describing events as they occur, with the goal of capturing all of the richness of everyday behavior and with the hope of discovering and understanding phenomena that might have been missed if only more cursory examinations have been made.

Qualitative psychological research methods include interviews , first-hand observation, and participant observation. Creswell identifies five main possibilities for qualitative research, including narrative, phenomenology , ethnography , case study , and grounded theory. Qualitative researchers [] sometimes aim to enrich interpretations or critiques of symbols , subjective experiences, or social structures. Sometimes hermeneutic and critical aims can give rise to quantitative research, as in Erich Fromm 's study of Nazi voting [ citation needed ] or Stanley Milgram 's studies of obedience to authority.

Just as Jane Goodall studied chimpanzee social and family life by careful observation of chimpanzee behavior in the field, psychologists conduct naturalistic observation of ongoing human social, professional, and family life. Sometimes the participants are aware they are being observed, and other times the participants do not know they are being observed.

Strict ethical guidelines must be followed when covert observation is being carried out. Fanelli argues that this is because researchers in "softer" sciences have fewer constraints to their conscious and unconscious biases. Some popular media outlets have in recent years spotlighted a replication crisis in psychology, arguing that many findings in the field cannot be reproduced.

Repeats of some famous studies have not reached the same conclusions, and some researchers have been accused of outright fraud in their results. Focus on this issue has led to renewed efforts in the discipline to re-test important findings. Some critics view statistical hypothesis testing as misplaced.

Psychologist and statistician Jacob Cohen wrote in that psychologists routinely confuse statistical significance with practical importance , enthusiastically reporting great certainty in unimportant facts. General , and the Journal of Personality and Social Psychology.

Of these articles, 71 were amenable to GRIM test analysis; 36 of these contained at least one impossible value and 16 contained multiple impossible values. In , a group of researchers reported a systemic bias in psychology studies towards WEIRD "western, educated, industrialized, rich and democratic" subjects.

Some observers perceive a gap between scientific theory and its application—in particular, the application of unsupported or unsound clinical practices. Ethical standards in the discipline have changed over time. The most important contemporary standards are informed and voluntary consent. Later, most countries and scientific journals adopted the Declaration of Helsinki.

All of these measures encouraged researchers to obtain informed consent from human participants in experimental studies. A number of influential studies led to the establishment of this rule; such studies included the MIT and Fernald School radioisotope studies, the Thalidomide tragedy , the Willowbrook hepatitis study, and Stanley Milgram 's studies of obedience to authority. University psychology departments have ethics committees dedicated to the rights and well-being of research subjects.

Researchers in psychology must gain approval of their research projects before conducting any experiment to protect the interests of human participants and laboratory animals. This code has guided the formation of licensing laws in most American states. It has changed multiple times over the decades since its adoption. In , the APA revised its policies on advertising and referral fees to negotiate the end of an investigation by the Federal Trade Commission.

The incarnation was the first to distinguish between "aspirational" ethical standards and "enforceable" ones. Some of the ethical issues considered most important are the requirement to practice only within the area of competence, to maintain confidentiality with the patients, and to avoid sexual relations with them.

Another important principle is informed consent , the idea that a patient or research subject must understand and freely choose a procedure they are undergoing. Current ethical guidelines state that using non-human animals for scientific purposes is only acceptable when the harm physical or psychological done to animals is outweighed by the benefits of the research.

From Wikipedia, the free encyclopedia. Not to be confused with Phycology , Physiology , or Psychiatry. List of psychology organizations. Outline of psychology , List of psychology disciplines , Applied psychology , and Subfields of psychology.

Educational psychology and School psychology. Psychological research and List of psychological research methods. For other uses, see Weird. Indeed, cognitive-behavioral therapists counsel their clients to become aware of maladaptive thought patterns, the nature of which the clients previously had not been conscious. For instance, medicine draws from psychology most heavily through neurology and psychiatry, whereas the social sciences draw directly from most of the specialties within psychology.

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James Goodwin, "United States", in Baker ed. An overview of his life and psychological work". In fact, in the period between and , the Rockefellers were almost the sole support of sex research in the United States. The decisions made by their scientific advisers about the nature of the research to be supported and how it was conducted, as well as the topics eligible for research support, shaped the whole field of sex research and, in many ways, still continue to support it.

One graduate of the Record Office training program wrote, 'I hope to serve the cause by infiltrating eugenics into the minds of teachers. It may interest you to know that each student who takes psychology here works up his family history and plots his family tree.

In the case of psychotherapy, he defined health in terms of blood, strong will, proficiency, discipline, Zucht und Ordnung , community, heroic bearing, and physical fitness. Schultz-Hencke also took the opportunity in to criticize psychoanalysis for providing an unfortunate tendency toward the exculpation of the criminal. Psychoanalysis also attracted the interest of Soviet psychology as a materialist trend that had challenged the credentials of classical introspective psychology.

The reluctance of the pre-Revolutionary establishment to propagate psychoanalysis also played a positive role in the post-Revolutionary years; it was a field uncompromised by ties to old-regime science. Leading Marxist philosophers earlier associated with psychology—including Yuri Frankfurt, Nikolai Karev, and Ivan Luppol—were executed in prison camps. The same fate awaited Alexei Gastev and Isaak Shipilrein. Those who survived lived in an atmosphere of total suspicion. Books and newspapers were constantly being recalled from libraries to rid them of 'obsolete' names and references.

Activity should not be regarded as an attribute of the individual but rather as an all-embracing system that 'captures' individuals and 'forces' them to behave a certain way. This approach may be traced back to the assertion of Wilhelm Humboldt that it is not man who has language as an attribute, but rather language that 'possesses' man. This new Soviet psychology leaned heavily on Lenin's theory of reflection, which was unearthed in his two volumes posthumously published in Toward the late twenties, a group of Soviet research psychologists headed by Vygotskii, along with Luria and Leont'ev, laid the groundwork for a Marxist-Leninist approach to psychic development.

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Yet, by the time the typical individual reaches retirement age, it is likely that psychological test results will have helped to shape his or her destiny. Widiger, "Volume Preface", in Weiner ed.

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It is also called dispositional attribution. It can adjust its shape to focus light from objects that are near or far away. Other symptoms may include changed sleeping or eating patterns, low energy, feelings of worthlessness or guilt, difficulty concentrating, and recurrent thoughts about suicide. It is used as a measure of performance on intelligence tests.

It can also be called vicarious conditioning. This point is also called the blind spot. It is active during states of relaxation. Expectations of improvement contribute to placebo effects. It is the operating principle of the id. Procedural memory is usually considered implicit. It is used to assess a psychological disorder. It is also a theory of personality developed by Freud that focuses on unconscious forces, the importance of childhood experiences, and division of the psyche into the id, ego, and superego.

These theories emphasize unconscious motives and desires and the importance of childhood experiences in shaping personality. It is also called paradoxical sleep. It also acts as the operating principle of the ego. This interaction results in personality. A neuron during this time is inactive. It occurs as a result of a fixed-interval schedule.

It is also called a conditioned punisher. It is also called a conditioned reinforcer. The self-concept includes all the thoughts, feelings, and beliefs people have about themselves.

They are located in the inner ear. The disorder begins before age thirty and continues for many years. It is also called source misattribution or source monitoring error. It also sometimes refers to circumstances that threaten well-being, to the response people have to threatening circumstances, or to the process of evaluating and coping with threatening circumstances.

It is usually a permanent condition, characterized by involuntary movements. It is often used to measure the need for achievement. It states that inherited characteristics that give an organism a reproductive or survival advantage are passed on more often to future generations than other inherited characteristics.

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a psychological or physiological pattern that occurs in an individual and is usually associated with distress or disability that is not expected .

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Psychological terms synonyms, Psychological terms pronunciation, Psychological terms translation, English dictionary definition of Psychological terms.) n. pl. psy·chol·o·gies 1. The science that deals with mental processes and behavior. 2. The emotional and behavioral characteristics of an individual, a.

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Today, psychology is concerned with the science or study of the mind and behavior. Many branches of psychology are differentiated by the specific field to which they belong, such as animal psychology, child psychology, and sports psychology. Health psychology - A branch of psychology that focuses on the relationship between psychosocial factors and the emergence, progression, and treatment of illness. Heritability - A mathematical estimate that indicates how much of a trait’s variation in a population can be attributed to genetic factors.

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(psychology) unconscious internalization of aspects of the world (especially aspects of persons) within the self in such a way that the internalized representation takes over the psychological functions of the external objects. The physiological and psychological reaction to an expected danger, whether real or imagined. Aphasia The impairment of the ability to communicate either through oral or written discourse as a result of brain damage.