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MetodeStatistikk1,836 KI og maskinlæring1,661 Beslutningsvitenskap932 Forskningsmetoder1,354 Måling1,745 Kausalitet og evidens532 Forskningspraksis118

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survey methodology

Snowball Sampling

Snowball sampling is a non-probability recruitment technique in which initial participants (seeds) refer the researcher to others who meet the study criteria, and those referrals in turn refer further participants. The sample grows incrementally — like a rolling snowball — until the required size or theoretical saturat

2 kilder1961

social psychology

Social Capital Scale

The Social Capital Scale is a self-report measure designed to assess the presence and extent of social capital in individuals and communities. Building on Robert D. Putnam's influential work on social capital as shared norms, networks, and reciprocity, the scale measures dimensions of social connection, participation i

2 kilder2000

child psychiatry

Social Communication Questionnaire

The Social Communication Questionnaire (SCQ) is a 40-item parent-report measure of autism-spectrum symptoms in children ages 4–15 years. Developed by Michael Rutter, Ann Bailey, and Catherine Lord in 2003, it serves as a brief screening tool for autism spectrum disorder. The SCQ asks parents to recall or report current

2 kilder2003

social media psychology

Social Comparison Scale (Online Contexts)

The Social Comparison Scale for online contexts measures the frequency and intensity with which individuals compare themselves to peers on social media platforms, with emphasis on upward comparison (to those perceived as superior in attractiveness, success, wealth). Developed and refined by researchers including Vogel

1 kilde2015

transcultural nursing

Social Distance Scale

The Social Distance Scale (SDS), also known as the Bogardus Scale, is a classic sociological instrument designed to measure the degree of social acceptance, prejudice, or social distance that individuals feel toward members of different ethnic, racial, or social groups. Originally developed by Emory Bogardus in 1933 an

2 kilder1933

social psychology

Social Dominance Orientation Scale

The Social Dominance Orientation Scale (SDO) is a self-report measure developed by Pratto, Sidanius, Stallworth, and Malle in 1994 to assess individual differences in preference for group-based hierarchy and inequality. The scale measures the extent to which individuals support dominance of some groups over others, rej

1 kilde1994

psychiatric rehabilitation

Social Inclusion Scale

The Social Inclusion Scale (SIS) is a brief measure assessing the degree to which individuals with serious mental illness perceive themselves as included, valued members of their community. Developed by Oades, Deane, and colleagues in 2005, the SIS captures subjective experiences of social participation, acceptance, an

1 kilde2005

clinical psychology

Social Interaction Anxiety Scale

The Social Interaction Anxiety Scale (SIAS) is a 20-item self-report questionnaire designed to measure anxiety and distress experienced during social interactions and conversations with others. Developed by Mattick and Clarke in 1998, the SIAS is a brief, user-friendly instrument for assessing social interaction anxiet

1 kilde1998

social media psychology

Social Media Disorder Scale

The Social Media Disorder Scale (SMD Scale) is a 9-item self-report measure developed by van den Eijnden and colleagues in 2016 to assess problematic social media use characterized by loss of control, withdrawal, tolerance, and conflict—mirroring criteria from behavioral addiction frameworks. It identifies individuals

1 kilde2016

information systems

Social Media Engagement Scale

The Social Media Engagement Scale measures the intensity and quality of user participation and interaction with social media platforms and content. Developed by researchers including Hollebeek (2011) and informed by work on consumer engagement (Zhang & Zhu, 2012), the scale captures cognitive, emotional, and behavioral

2 kilder2011

social psychology

Social Provisions Scale

The Social Provisions Scale is a widely used multidimensional instrument for measuring the degree to which individuals perceive their social relationships as providing essential emotional and practical support. Developed by Carolyn Cutrona and Daniel Russell in 1987, the SPS operationalizes the theory that healthy soci

2 kilder1987

rehabilitation science

Social Role Participation Questionnaire

The Social Role Participation Questionnaire (SRPQ) is a brief, self-report instrument designed to measure the extent to which individuals participate in and derive meaning from key social roles (family member, friend, worker, volunteer, community member, leisure participant). Developed by Lyons, Sayer, and colleagues,

2 kilder2004

transcultural nursing

Societal Attitudinal Familial Ethnic Acculturative Stress Scale

The Societal Attitudinal Familial Ethnic (SAFE) Acculturative Stress Scale is a self-report instrument designed to measure the psychological stress and strain experienced by individuals during the acculturation process—the adaptation of cultural attitudes, behaviors, and identities when navigating between heritage and

1 kilde1997

software engineering

Software Reliability Model

Software reliability models predict the behavior of failure rates during testing and operation, estimating when software achieves required reliability targets. Introduced by Goel and Okumoto (1979), these stochastic models capture how defect discovery declines as testing progresses. Organizations use reliability models

3 kilder1979

telecommunications

Software-Defined Networking

Software-Defined Networking (SDN) is a network architecture paradigm that decouples the control plane (routing decisions) from the data plane (packet forwarding). Introduced by McKeown et al. (2008) with OpenFlow, SDN enables network programmability by centralizing control logic in software-based controllers that direc

2 kilder2008

agronomy

Soil Fertility Management

Soil Fertility Management is a diagnostic and prescriptive pipeline for assessing soil nutrient status via laboratory testing, interpreting results against crop-specific nutrient requirements, and recommending fertilizer or amendment rates. Formalized by soil testing institutions (ICAR, USDA-CSREES) and widely adopted

2 kilder1990

agronomy

Soil Moisture Curve

The soil moisture curve (or soil water retention curve, SWRC) describes the relationship between soil water content and soil matric potential (water tension). It characterizes how tightly water is bound in pores of different sizes: large pores drain at low tensions (wet soils), while smaller pores retain water at high

3 kilder1956

environmental engineering

Soil Remediation

Soil remediation encompasses a suite of technologies and strategies to treat contaminated soil at sites with elevated levels of organic compounds, heavy metals, radionuclides, or other hazardous substances. Systematized by the US EPA in the 1980s following industrial accidents and legacy contamination discoveries, soil

3 kilder1983

agronomy

Soil Respiration Measurement

Soil respiration measurement quantifies the rate at which CO2 is released from the soil surface to the atmosphere, integrating contributions from root respiration and microbial decomposition of organic matter. It is a fundamental technique in agronomy, ecology, and climate science, providing insight into belowground ca

2 kilder1950

military psychology

Soldier Adaptation Measure

The Soldier Adaptation Measure is a brief self-report instrument assessing psychological readiness and adaptation to military deployment. Developed by Bliese and colleagues in the context of military mental health surveillance, it measures dimensions of military motivation, unit cohesion, perceived leadership, and psyc

2 kilder2007

pharmacology

Solid Dispersion

Solid dispersion is a formulation technique where a poorly soluble drug is molecularly dispersed in a hydrophilic polymer matrix, improving aqueous solubility and bioavailability. Introduced by Chiou and Riegelman in 1971, solid dispersions remain a key strategy for overcoming solubility-limited absorption.

2 kilder1971

veterinary science

Somatic Cell Count

Somatic Cell Count (SCC) is a quantitative measure of the concentration of white blood cells and epithelial cells in milk, used as a primary indicator of udder health and the presence of mastitis in lactating cattle. Standardized by veterinary regulatory agencies worldwide, SCC serves as a non-invasive, cost-effective

3 kilder1980

clinical psychology

Somatic Symptom Scale-8

The Somatic Symptom Scale-8 is a brief eight-item self-report instrument designed by Bernd Gierk and colleagues to assess the severity and burden of somatic (bodily) symptoms. Published in JAMA Internal Medicine in 2014, the SSS-8 is derived from the longer Somatic Symptom Disorder-B Criteria Scale and serves as a rapi

3 kilder2014

food science

Soxhlet Extraction

Soxhlet Extraction is a continuous solvent extraction method developed by Franz Soxhlet in 1879 for determining fat and lipid content in foods. Using a specialized glassware apparatus, Soxhlet repeatedly cycles hot solvent through a food sample, extracting lipids with high efficiency. It remains the official standard m

2 kilder1879

sampling

Spatial Stratified Heterogeneity

Spatial Stratified Heterogeneity, commonly known as Geodetector, is a framework introduced by Jinfeng Wang and colleagues in 2010 for measuring and detecting spatial heterogeneity in data and identifying environmental risk factors. It quantifies the degree to which a given factor (variable) explains spatial variation i

3 kilder2010

ecology

Species Accumulation

Species accumulation curves describe how the number of observed species increases with cumulative sampling effort. Introduced by Sanders (1968) and developed by Colwell and colleagues, this method enables ecologists to compare biodiversity across sites and estimate total species richness despite incomplete sampling. It

3 kilder1968

sustainability

Species Distribution Models (MaxEnt)

Species Distribution Models (SDMs) using Maximum Entropy (MaxEnt) are statistical methods developed by Phillips, Anderson, and Schapire (2004) to predict where species are likely to occur based on known occurrence points and environmental variables. MaxEnt has become one of the most widely used algorithms in conservati

3 kilder2004

anxiety disorders

Specific Phobia Questionnaire

The Specific Phobia Questionnaire (SPQ) is a brief self-report measure assessing fear, avoidance, and distress related to specific phobic objects or situations (e.g., heights, spiders, flying, blood-injection-injury). Developed by Osman and colleagues in the 1990s, the SPQ captures the cognitive, behavioral, and physio

1 kilde1996

neuroimaging

Spike Sorting

Spike sorting is an electrophysiological technique for identifying and isolating action potentials of individual neurons from extracellular electrical recordings. Central to single-unit neurophysiology, spike sorting assigns spikes recorded on electrode arrays to their neuron of origin, enabling study of individual neu

2 kilder2000

integrative medicine

Spiritual Care Competence Scale

The SCCS is a clinical competency assessment tool measuring healthcare professionals' knowledge, attitudes, and skills in providing spiritual care to patients. Developed by Ronaldson and colleagues, it operationalizes spiritual care as an evidence-based competency, reflecting recognition that spirituality significantly

2 kilder2012

palliative care

Spiritual Well-Being Scale

The Spiritual Well-Being Scale (SWBS) is a 20-item self-report measure of spiritual well-being encompassing both religious faith and existential meaning—two dimensions critical to quality of life at end-of-life. Developed by Paloutzian and Ellison in 1982, the SWBS has become a cornerstone assessment tool in palliative

2 kilder1982

forensic psychology

SPJ Framework

The Structured Professional Judgment (SPJ) framework represents a contemporary approach to forensic risk assessment that synthesizes clinical judgment with empirical evidence of risk factors. Rather than producing a numerical score, SPJ guides clinicians through systematic evaluation of case-specific evidence to arrive

2 kilder2003

sport psychology

Sport Anxiety Scale

The SAS is a 15–21 item questionnaire measuring trait (dispositional) sport-specific anxiety—the tendency to experience worry and physiological arousal in sport-competitive contexts. Developed by Smith, Smoll, and Schutz in 1990, the SAS is the primary instrument for assessing individual differences in sport anxiety pr

2 kilder1990

sport psychology

Sport Motivation Scale

The SMS is a 24–28 item questionnaire measuring the motivational reasons athletes engage in sport, organized along the continuum of Self-Determination Theory: from intrinsic motivation (inherent enjoyment, mastery, excitement) through extrinsic forms (identified goals, introjected norms, external rewards) to amotivatio

2 kilder1995

gerontology

SPPB

The Short Physical Performance Battery (SPPB) is a performance-based assessment developed by Guralnik and colleagues in 1994 at the National Institute on Aging to measure lower extremity physical function and functional mobility in older adults. It is widely used in clinical practice and epidemiological research to pre

3 kilder1994

forensic psychology

SPS

The Suicide Probability Scale (SPS) is a 36-item self-report instrument developed by John Cull and William Gill (1990) to assess suicide risk, hopelessness, suicide ideation, negative self-evaluation, and hostility in adolescents and adults. It provides a multidimensional profile of suicide-related cognitions and emoti

2 kilder1990

neurology

SS-QoL

The SS-QoL is a disease-specific quality-of-life instrument designed to capture the multidimensional impact of stroke on survivors' functional and emotional well-being. Developed by Williams and colleagues in 1999, this 49-item scale addresses stroke-specific concerns including language, cognition, mobility, and emotio

1 kilde1999

forestry

Stand Density Index

The Stand Density Index (SDI), introduced by Reineke in 1933, is a dimensionless measure of forest density that accounts for both tree number and size. It expresses the number of trees per hectare in a stand, adjusted to a reference quadratic mean diameter (QMD) of 25 cm, providing a standardized metric for comparing t

2 kilder1933

analytical chemistry

Standard Addition Method

The standard addition method is a quantitative analytical technique that determines the concentration of an unknown analyte by measuring the response before and after adding a known quantity of the analyte (a standard) to the sample itself. This approach compensates for matrix effects and interference from other sample

3 kilder1920

occupational health

Stanford Presenteeism Scale

The Stanford Presenteeism Scale (SPS-6) is a brief assessment tool measuring work productivity and performance among employees who are present at work despite health problems, personal issues, or other limitations. Developed by Koopman and colleagues in 2002, the SPS-6 quantifies the degree to which an employee's abili

1 kilde2002

forensic psychology

Static-99R

The Static-99R is an actuarial risk assessment instrument designed to estimate the likelihood of sexual recidivism among adult male sex offenders. Originally developed as the Static-99 by Hanson and Thornton (2000) and revised in 2009 as the Static-99R by Hanson, Helmus, and Thornton, it remains one of the most widely

2 kilder2009

chemistry

Stereochemistry Analysis

Stereochemistry analysis is the systematic study of three-dimensional molecular structures, with emphasis on determining the spatial arrangement of atoms around chiral centers and assigning unambiguous names to stereoisomers. Formalized by Cahn, Ingold, and Prelog in 1966, the CIP (Cahn-Ingold-Prelog) rules provide an

2 kilder1966

sleep medicine

STOP-BANG

The STOP-BANG is an 8-item screening tool for identifying patients at risk of obstructive sleep apnea (OSA) before surgery or medical procedures. Developed by Chung and colleagues in 2008, it is widely used in perioperative medicine, primary care, and sleep clinics to quickly stratify OSA risk in both adult patients. T

1 kilde2008

psychology

Stop-Signal Reaction Time

The Stop-Signal Reaction Time (SSRT) task is a behavioral measure of response inhibition and executive control. Participants make rapid responses to go signals but must cancel responses when an occasional stop signal appears. By analyzing how successfully they inhibit responses and estimating the latency of inhibition

3 kilder1984

environmental engineering

Stormwater Management

Stormwater management is the planning and engineering of urban water systems to control, treat, and utilize rainwater runoff from developed areas. Traditional approaches (pipes, detention basins) conveyed runoff rapidly to streams or treatment plants; modern green infrastructure approaches (permeable pavements, bioswal

3 kilder1980

strategic management

Strategic Orientation Scale

Strategic Orientation refers to the fundamental approach an organization adopts when competing in its market, encompassing its competitive strategy, market focus, and organizational design. Miles and Snow's (1978) foundational framework identifies four strategic postures: Defenders (focus on stable market segments, ope

3 kilder1978

survey methodology

Stratified Sampling

Stratified sampling is a probability sampling design in which the target population is partitioned into non-overlapping, exhaustive subgroups called strata, and independent probability samples are drawn within each stratum. Formalized by William G. Cochran in Sampling Techniques (1977), the method exploits known popula

1 kilde1977

developmental assessment

Strengths and Difficulties Questionnaire

The Strengths and Difficulties Questionnaire (SDQ), developed by Robert Goodman in 1997 and validated by 2001, is a brief 25-item behavioral screening instrument for children aged 2–17 years. Available in parent, teacher, and youth self-report versions, it assesses both emotional/behavioral difficulties and personal st

2 kilder2001

psychology

Stroop Task

The Stroop task is a classic measure of cognitive control and selective attention. Participants name the color of words while ignoring the words' semantic content. When the color and word meaning match (e.g., the word 'red' printed in red ink), responses are fast. When they conflict (e.g., the word 'red' printed in blu

3 kilder1935

clinical psychology

Structured Clinical Interview for DSM

The Structured Clinical Interview for DSM Disorders (SCID) is a semi-structured interview protocol designed to assess the presence or absence of DSM diagnostic criteria for major psychiatric disorders. Developed by Michael B. First and colleagues in the 1990s and updated to align with DSM-5, it remains the gold-standar

2 kilder1997

survey methodology

Structured Interview

A structured interview is a data collection technique in which every participant is asked exactly the same pre-specified questions in the same order, using standardized wording. Because the interview schedule is fixed, responses across participants are directly comparable, enabling quantitative aggregation and statisti

2 kilder1940

psychology of religion

STS

The Spiritual Transcendence Scale (STS), developed by Piedmont in 1999, is a 24-item self-report measure of spiritual transcendence: the human capacity to experience connection to something beyond oneself—whether understood as God, nature, humanity, or the sacred. The STS conceptualizes spiritual transcendence as a per

2 kilder1999

educational psychology

Student Engagement Scale

The Student Engagement Scale (SES) measures the extent to which students are actively involved in academic and social aspects of school or university life. Grounded in Fredricks et al.'s multidimensional framework, the instrument assesses behavioral engagement (participation, attendance, effort), emotional engagement (

2 kilder2004

educational psychology

Student Satisfaction Survey

The Student Satisfaction Survey (SSS) is a widely used institutional tool to measure student perceptions of course quality, instructor effectiveness, and learning environment. Typically administered at the end of a course using Likert-scale items, the SSS collects feedback on teaching methods, course materials, support

2 kilder2000

educational psychology

Study Process Questionnaire

The Study Process Questionnaire (SPQ) is a self-report instrument developed by John Biggs to identify the approaches and processes students use when learning. It assesses three dimensions: deep learning approach (seeking understanding and making connections), surface learning approach (memorizing and reproducing), and

2 kilder1987

educational psychology

Study Skills Assessment Questionnaire

The Study Skills Assessment Questionnaire measures the habitual study practices, time management, concentration, and learning motivation of students. Originating from the foundational Survey of Study Habits and Attitudes (Brown & Holtzman, 1964) and refined in contemporary versions, the SSAQ identifies whether students

2 kilder1964

speech language pathology

Stuttering Severity Instrument

The Stuttering Severity Instrument–Fourth Edition (SSI-4) is the standard clinician-administered measure of stuttering severity in children (ages 2–13) and adults (ages 14–75). Developed by Riley (2009), SSI-4 quantifies stuttering through three behavioral components: frequency (percentage of syllables stuttered), dura

3 kilder2009

positive psychology

Subjective Well-Being Scale

The Subjective Well-Being (SWB) Scale is a broad category of brief instruments measuring how satisfied people are with their lives and the frequency of positive and negative emotions they experience. Originating from Diener's foundational work in the 1980s, SWB scales operationalize the recognition that well-being is f

2 kilder1985

chemistry

Substitution Reaction Kinetics

Substitution reaction kinetics analysis is the systematic study of how fast nucleophiles replace leaving groups in organic and inorganic compounds. Formalized by Edward Hughes and Christopher Ingold in the 1930s, this framework distinguishes between bimolecular (SN2) and unimolecular (SN1) mechanisms, connecting mechan

2 kilder1937

food science

Supercritical Fluid Extraction

Supercritical Fluid Extraction (SFE) is a separation technique that uses a fluid held above its critical temperature and pressure — most commonly carbon dioxide — to selectively dissolve and remove target compounds from a solid or liquid matrix. Widely applied in food science, nutraceutical production, and the flavour

2 kilder1960

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