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Browse key terms and definitions across all GCSE subjects. Search by keyword or filter by subject and exam board.
23,110 key terms
Positive correlation
An association in which larger values of one variable tend to occur with larger values of the other.
Positive correlation
An association in which higher values of one variable tend to occur with higher values of the other.
Positive discrimination
Giving special help or preferential treatment to a group that has been disadvantaged or unfairly treated, to improve its opportunities and representation.
Positive engagement with society
Constructive involvement in relationships and community life, such as maintaining friendships, cooperating with others and contributing to shared activities.
Positive feedback
A cycle in which an initial change produces effects that reinforce that change.
Positive feedback
Information or praise that identifies what a performer did correctly, encouraging them to repeat it.
Positive ion
A positively charged ion formed when an atom loses one or more electrons.
Positive ion
A positively charged ion formed when an atom loses one or more electrons.
Positive ion
A particle formed when an atom loses one or more electrons, leaving more protons than electrons.
Positive ion (cation)
A positively charged particle formed when an atom loses one or more electrons.
Positive ion (cation)
A positively charged ion, formed when an atom or group of atoms loses one or more electrons.
Positive metal ion
A positively charged particle formed when a metal atom loses one or more electrons.
Positive metal ion
A positively charged particle formed when a metal atom loses outer-shell electrons.
Positive multiplier
A process in which an initial increase in investment or employment generates further economic activity through business orders and spending.
Positive multiplier effect
The process by which an initial increase in investment or employment generates further spending, business activity and jobs.
Positive number
A number greater than zero, written with or without a sign.
Positive reinforcement
Increasing the likelihood that a behaviour will be repeated by providing a rewarding consequence after it.
Positive result
A result showing that the substance being tested for is present in the sample.
Positive result
A test result showing that the ion being tested for is present.
Positive result
An observable change indicating that the substance being tested for has been detected.
Positive role model
A person whose constructive behaviour provides an example for others to observe and imitate.
Positive sanction
A reward for behaviour that meets a group’s rules or expectations.
Positive self-talk
Giving yourself encouraging statements or positive instructions to build confidence, maintain focus and control arousal.
Positive skew
A distribution with a longer tail towards higher values, usually with most values concentrated towards the lower end.
Positive symptom
An experience or behaviour added to usual functioning, such as hallucinations or delusions.
Positive thinking
Developing encouraging thoughts about performance and success rather than dwelling on negative thoughts or past failures.
Positive tropism
Growth towards a stimulus.
Positivism
An approach to sociology that favours systematic measurement and quantitative evidence to identify social patterns and relationships.
Positron
The antiparticle of an electron: it has the same mass as an electron but a positive charge.
Positron
A particle with the same mass as an electron but an equal and opposite positive charge.
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