The Pittsburgh Sleep Quality Index ( PSQI ) is a self-report questionnaire that assesses sleep quality over a 1-month time interval. The measure consists of 19 individual items, creating 7 components that produce one global score, and takes 5–10 minutes to complete. Developed by researchers at the University of Pittsburgh , the PSQI is intended to be a standardized sleep questionnaire for clinicians and researchers to use with ease and is used for multiple populations. The questionnaire has been used in many settings, including research and clinical activities, and has been used in the diagnosis of sleep disorders . Clinical studies have found the PSQI to be reliable and valid in the assessment of sleep problems to some degree, but more so with self-reported sleep problems and depression-related symptoms than actigraphic measures.
41-449: The PSQI was developed in 1989, by Buysse and his colleagues, to create a standardized measure designed to gather consistent information about the subjective nature of people's sleep habits and provide a clear index that both clinicians and patients can use. It gained popularity as a measure that could be used in research that looks at how sleep might be associated with sleep disorders, depression, and bipolar disorder. Consisting of 19 items,
82-458: A Likert scale with ranked options , true-false, or forced choice, although other formats such as sentence completion or visual analog scales are possible. True-false involves questions that the individual denotes as either being true or false about themselves. Forced-choice is a set of statements that require the individual to choose one as being most representative of themselves. If the inventory includes items from different factors or constructs,
123-557: A better light (e.g., forensic or personnel settings). Ben-Porath and Waller pointed out that the NEO Inventories could be improved with the addition of controls for dishonesty and social desirability. Juni, in another review of the NEO PI-R for the MMY, praised the NEO PI-R for including both self- and other-report scales, making it easier for psychologists to corroborate information provided by
164-556: A client or research participant. Juni criticized the NEO PI-R for its conceptualization using the Five Factor Model (FFM) of personality. Juni argued that the existence of the FFM was phenomenological and atheoretical, the model gaining popularity as a result of the influence of the authors (McCrae and Costa) in the psychological community. The NEO PI-R has also been criticized because of its market-oriented, proprietary nature. In response to
205-586: A few 120-question versions based on IPIP questions. Very short (5 items each) IPIP-based analogues to the NEO PI-R scales are also part of the Analog for Multiple Broadband Inventories, an inventory designed to approximate a large number of different personality scales with a minimal number of items. Evidence of the NEO scales' stability in different countries and cultures can be considered evidence of its validity. A great deal of cross-cultural research has been carried out on
246-535: A personality inventory. The researchers later published three updated versions of their personality inventory in 1985, 1992, and 2005. These were called the NEO PI (Neuroticism, Extraversion, Openness Personality Inventory), NEO PI-R (or Revised NEO PI), and NEO PI-3 , respectively. The revised inventories feature updated vocabulary that could be understood by adults of any education level, as well as children. The inventories have both longer and shorter versions, with
287-462: A strengths-based description of three levels (high, medium, and low) in each domain. For example, low N reads "Secure, hardy, and generally relaxed even under stressful conditions," whereas high N reads "Sensitive, emotional, and prone to experience feelings that are upsetting." For profile interpretation, facet and domain scores are reported in T scores and are recorded visually as compared to the appropriate norming group. The internal consistency of
328-613: A study conducted in Seville, Spain, Cano-Garcia and his colleagues (2005) found that, using a Spanish version of the inventory, dimensions of the NEO correlated with teacher burnout . Neuroticism was related to the "emotional exhaustion" dimension of burnout, and Agreeableness, with the "personal accomplishment" burnout dimension. Finally, Korukonda (2007) found that Neuroticism was positively related to computer anxiety; Openness and Agreeableness were negatively related to computer anxiety. The NEO-PI-R has been extensively used across cultures. Per
369-412: A theory of personality or a prototype of a construct. Factor analysis uses statistical methods to organize groups of related items into subscales. Criterion-keyed inventories include questions that have been shown to statistically discriminate between a comparison group and a criterion group, such as people with clinical diagnoses of depression versus a control group. Items may use any of several formats:
410-444: Is advised for all self-report inventories. Items may differ in social desirability , which can cause different scores for people at the same level of a trait, but differing in their desire to appear to possess socially desirable behaviors. Revised NEO Personality Inventory The Revised NEO Personality Inventory ( NEO PI-R ) is a personality inventory that assesses an individual on five dimensions of personality. These are
451-418: Is also abbreviated as BPSQI where 'B' stands for Bengali. The PSQI has the same problems as other self-report inventories in that scores can be easily exaggerated or minimized by the person completing them. Like all questionnaires, the way the instrument is administered can have an effect on the final score. The PSQI is a relatively new measure and as a result has not received enough investigation to determine
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#1733093315954492-467: Is as follows: Kindness Imagination / Self-efficacy / Anger / Artistic Interest / Morality / Organizing Emotionality Sense of Duty/Obligation Lively Temperament Adventurousness /Exploration Cooperation Im moderation Intellectual Interest / Curiosity Willpower Fear / Learned helplessness Cheerfulness /Vivacity Psychological liberalism /Tolerance to ambiguity Sympathy Cautiousness In
533-703: Is no objectively correct answer; responses are based on opinions and subjective perceptions. Most self-report inventories are brief and can be taken or administered within five to 15 minutes, although some, such as the Minnesota Multiphasic Personality Inventory (MMPI), can take several hours to fully complete. They are popular because they can be inexpensive to give and to score, and their scores can often show good reliability . There are three major approaches to developing self-report inventories: theory-guided, factor analysis , and criterion-keyed. Theory-guided inventories are constructed around
574-580: Is the NEO Five-Factor Inventory (NEO-FFI). It comprises 60 items and is designed to take 10 to 15 minutes to complete; by contrast, the NEO PI-R takes 45 to 60 minutes to complete. The NEO-FFI was revised in 2004. With the publication of the NEO PI-3 in 2005, a revised version of the NEO-FFI was also published. The revision of the NEO-FFI involved the replacement of 15 of the 60 items. The revised edition
615-526: Is thought to be more suitable for younger individuals. The new version had a stronger factor structure and increased reliability. Public domain inventories that correlate well with NEO PI-R have been published using items from the International Personality Item Pool and are collectively known as the "IPIP-NEO". Lewis Goldberg published a 300-question version of the 30-facet scale in 1999. John Johnson and Maples et al. have developed
656-490: Is used by researchers working with people from adolescence to late life. The PSQI is recommended in independent reviews because it has accumulated a substantial amount of research evidence. In addition to the measure's promising reliability and validity, its brevity and accessibility as a free measure allow the measure great potential for clinical practice. To date, it has been translated into 56 languages. The PSQI in Bengali language
697-874: Is weighted on a 0–3 interval scale. The global PSQI score is then calculated by totaling the seven component scores, providing an overall score ranging from 0 to 21, where lower scores denote a healthier sleep quality. Traditionally, the items from the PSQI have been summed to create a total score to measure overall sleep quality. Statistical analyses also support looking at three factors, which include sleep efficiency (using sleep duration and sleep efficiency variables), perceived sleep quality (using subjective sleep quality, sleep latency, and sleep medication variables), and daily disturbances (using sleep disturbances and daytime dysfunctions variables). *Table from Youngstrom et al. , extending Hunsley & Mash, 2008 *Table from Youngstrom et al. , extending Hunsley & Mash, 2008 The PSQI now
738-512: The tyrosine hydroxylase gene, while another study could not confirm the finding. In a study published in Science , Lesch et al. (1996) found a relationship between the serotonin transporter gene regulatory region ( 5-HTTLPR ) and the neuroticism subscale. Individuals with a shorter allele had higher neuroticism scores than individuals with the longer allele. The effect was significant for heterozygotes and even stronger for people homozygous for
779-539: The Big Five scales, were necessarily smaller, ranging from .54 to .83. For the NEO FFI (the 60 item domain only version) the internal consistencies reported in the manual were: N = .79, E = .79, O = .80, A = .75, C = .83. In the literature, the NEO FFI is used more often, with investigators using the NEO PI-R usually using the items from just the domains they are interested in. Sherry et al. (2007) found internal consistencies for
820-513: The FFI to be as follows: N = .85, E = .80, O = .68, A = .75, C = .83. The NEO has been translated into many languages. The internal consistency coefficients of the domain scores of a translation of the NEO that has been used in the Philippines are satisfactory. The alphas for the domain scores range from .78 to .90, with facet alphas having a median of .61. Observer-ratings NEO PI-R data from 49 cultures
861-539: The FFM to be robust across cultures. Rolland, on the basis of the data from a number of countries, asserted that the neuroticism, openness, and conscientiousness dimensions are cross-culturally valid. Rolland further advanced the view that the extraversion and agreeableness dimensions are more sensitive to cultural context. Age differences in the five-factors of personality across the adult life span are parallel in samples from Germany, Italy, Portugal, Croatia, and South Korea. Data examined from many countries have shown that
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#1733093315954902-459: The Five-Factor Model of Personality. Much of the research has relied on the NEO PI-R and the shorter NEO-FFI. McCrae and Allik (2002) edited a book consisting of papers bearing on cross-cultural research on the FFM. Research from China, Estonia, Finland, the Philippines, France, German-speaking countries, India, Portugal, Russia, South Korea, Turkey, Vietnam, and Zimbabwe have shown
943-1090: The NEO PI-R manual, was the following: N = .83, E = .82, O = .83, A = .63, C = .79. Costa and McCrae pointed out that these findings not only demonstrate good reliability of the domain scores, but also their stability (among individuals over the age of 30). Scores measured six years apart varied only marginally more than scores measured a few months apart. The psychometric properties of NEO PI-R scales have been found to generalize across ages, cultures, and methods of measurement. Although individual differences (rank-order) tend to be relatively stable in adulthood, there are maturational changes in personality that are common to most people (mean-level changes). Most cross-sectional and longitudinal studies suggest that neuroticism, extraversion, and openness tend to decline, whereas agreeableness and conscientiousness tend to increase during adulthood. A meta-analysis of 92 personality studies that used several different inventories (among them NEO PI-R) found that social dominance , conscientiousness, and emotional stability increased with age, especially in
984-613: The NEO PI-R were published in the 12th edition of the Mental Measurements Yearbook (MMY). The NEO-Pi-R (which only measures 57% of the known trait variance in the normal personality sphere alone) has been severely criticized both in terms of its factor analytic/construct validity and its psychometric properties. Widiger criticized the NEO for not controlling for social desirability bias. He argued that test developers cannot assume participants will be honest, especially in settings where it benefits people to present themselves in
1025-420: The NEO PI-R. They suggested that the NEO PI-3 has the potential to be utilized with those who do not speak English as their first language. The NEO PI-R has been used in research pertaining to both (a) genotype and personality and (b) brain and personality. Such studies have not always been conclusive. For example, one study found some evidence for an association between NEO PI-R facets and polymorphism in
1066-465: The NEO scales was assessed on 1,539 individuals. The internal consistency of the NEO PI-R was high, at: N = .92, E = .89, O = .87, A = .86, C = .90. The internal consistency of the facet scales ranged from .56 to .81. The internal consistency of the NEO PI-3 was consistent with that of the NEO PI-R, with α ranging from .89 to .93 for the five domains. Internal consistency coefficient from the facets, with each facet scale comprising fewer items than each of
1107-410: The PSQI measures several different aspects of sleep, offering seven component scores and one composite score. The component scores consist of subjective sleep quality, sleep latency (i.e., how long it takes to fall asleep), sleep duration, habitual sleep efficiency (i.e., the percentage of time in bed that one is asleep), sleep disturbances, use of sleeping medication, and daytime dysfunction. Each item
1148-452: The age and gender differences in those countries resembled differences found in U.S. samples. An intercultural factor analysis yielded a close approximation to the five-factor model. McCrae, Terracciano et al. (2005) further reported data from 51 cultures. Their study found a cross-cultural equivalency between NEO PI-R five factors and facets . With the recent development of the NEO PI-3, cross-cultural research will likely begin to compare
1189-476: The age span of 20 to 40. Costa and McCrae reported in the NEO manual research findings regarding the convergent and discriminant validity of the inventory. Examples of these findings include the following: A number of studies evaluated the criterion validity of the NEO. For example, Conard (2005) found that Conscientiousness significantly predicted the GPA of college students, over and above using SAT scores alone. In
1230-435: The entirety of the psychometric measures. Self-report inventories A self-report inventory is a type of psychological test in which a person fills out a survey or questionnaire with or without the help of an investigator. Self-report inventories often ask direct questions about personal interests, values, symptoms , behaviors , and traits or personality types . Inventories are different from tests in that there
1271-446: The expense involved in using proprietary personality inventories such as the NEO, other researchers have contributed to the development of the International Personality Item Pool (IPIP); IPIP items and scales are available free of charge. NEO PI-R was also criticised for being possibly too complex to understand for less educated or less intelligent individuals. A shortened version of NEO PI-R has been published. The shortened version
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1312-409: The fact that the assessment is "balanced" to control for the effects of acquiescence and nay-saying, that if more than 150 responses, or fewer than 50 responses, are "agree" or "strongly agree", the results should be interpreted with caution. Scores can be reported to most test-takers on "Your NEO Summary", which provides a brief explanation of the assessment, and gives the individuals domain levels and
1353-421: The full NEO PI-R consisting of 240 items and providing detailed facet scores. By contrast, the shorter NEO-FFI (NEO Five-Factor Inventory) comprised 60 items (12 per trait). The test was originally developed for use with adult men and women without overt psychopathology . It has also been found to be valid for use with children. A table of the personality dimensions measured by the NEO PI-R, including facets ,
1394-759: The information on the Psychological Assessment Resources (PAR) website (PAR is the publisher of the NEO-PI-R), the NEO-PI-R has been translated into 40 languages. These languages are Afrikaans, Albanian, Arabic, Bulgarian, Chinese, Croatian, Estonian, Filipino, Finnish, Hebrew, Hindi, Hmong, Hungarian, Icelandic, Indonesian, Italian, Japanese, Kannada, Korean, Latvian, Lithuanian, Malay, Marathi, Persian, Peruvian, Polish, Portuguese, Romanian, Russian, Serbian, Slovene, Sotho, Spanish, Taiwanese, Thai, Tigrignan, Turkish, Urdu, Vietnamese, and Xhosa. Critical reviews of
1435-596: The items can be mixed together or kept in groups. Sometimes the way people answer the item will change depending on the context offered by the neighboring items. Self-report personality inventories include questions dealing with behaviours, responses to situations, characteristic thoughts and beliefs, habits, symptoms, and feelings. Test-takers-are usually asked to indicate how well each item describes themselves or how much they agree with each item. Formats are varied, from adjectives such as "warm", to sentences such as "I like parties", or reports of behaviour "I have driven past
1476-559: The most recent publication, there are two forms for the NEO, self-report (form S) and observer-report (form R) versions. Both forms consist of 240 items (descriptions of behavior) answered on a five-point Likert scale . Finally, there is a 60-item inventory, the NEO FFI. There are paper and computer versions of both forms. The manual reports that administration of the full version should take between 30 and 40 minutes. Costa and McCrae reported that an individual should not be evaluated if more than 40 items are missing. They also state that despite
1517-400: The newer version with the NEO PI-R. Piedmont and Braganza (2015) compared the NEO PI-R to the NEO PI-3 using an adult sample from India. They used an English version of the NEO PI-3 in order to measure its utility in individuals who speak English as a second language. Piedmont and Braganza found that the NEO PI-3 had slightly higher item/total correlations and better test-retest reliability than
1558-532: The same dimensions found in the Big Five personality traits. These traits are openness to experience , conscientiousness , extraversion(-introversion) , agreeableness , and neuroticism . In addition, the NEO PI-R also reports on six subcategories of each Big Five personality trait (called facets ). Historically, development of the Revised NEO PI-R began in 1978 when Paul Costa and Robert McCrae published
1599-600: The severity or frequency of symptoms in order to minimize their problems. For this reason, self-report inventories are not used in isolation to diagnose a mental disorder, often used as screeners for verification by other assessment data. Many personality tests, such as the MMPI or the MBTI add questions that are designed to make it difficult for a person to exaggerate traits and symptoms. They are in common use for measuring levels of traits, or for symptom severity and change. Clinical discretion
1640-932: The speed limit" and response formats from yes/no to Likert scales, to continuous "slider" responses. Some inventories are global, such as the NEO , others focus on particular domains, such as anger or aggression. Unlike IQ tests where there are correct answers that have to be worked out by test takers, for personality, attempts by test-takers to gain particular scores are an issue in applied testing. Test items are often transparent, and people may "figure out" how to respond to make themselves appear to possess whatever qualities they think an organization wants. In addition, people may falsify good responses, be biased towards their positive characteristics, or falsify bad, stressing negative characteristics, in order to obtain their preferred outcome. In clinical settings patients may exaggerate symptoms in order to make their situation seem worse, or under-report
1681-463: Was used as criterion in a recent study which tested whether individuals' perceptions of the "national character" of a culture accurately reflected the personality of the members of that culture (it did not). The test-retest reliability of the NEO PI-R has also been found to be satisfactory. The test-retest reliability of an early version of the NEO after 3 months was: N = .87, E = .91, O = .86. The test-retest reliability for over 6 years, as reported in