All pages en.m.wikipedia.org Display pages starting at: I



In philosophy, ideas are usually taken as mental representational images of some object. Ideas can also be abstract concepts that do not present as mental images. Many philosophers have considered ideas to be a fundamental ontological category of being. The capacity to create and understand the meaning of ideas is considered to be an essential and defining feature of human beings. In a popular sense, an idea arises in a reflexive, spontaneous manner, even without thinking or serious reflection, for example, when we talk about the idea of a person or a place. A new or original idea can often lead to innovation.


Identification (psychology)

Identification is a psychological process whereby the individual assimilates an aspect, property, or attribute of the other and is transformed wholly or partially by the model that other provides. It is by means of a series of identifications that the personality is constituted and specified. The roots of the concept can be found in Freud’s writings. The three most prominent concepts of identification as described by Freud are: primary identification, narcissistic (secondary) identification and partial (secondary) identification.

While “in the psychoanalytic literature there is agreement that the core meaning of identification is simple – to be like or to become like another”, it has also been adjudged ‘”the most perplexing clinical/theoretical area” in psychoanalysis’.

View more – Wikipedia.org:


Identity (social science)

Identity is the qualities, beliefs, personality, looks and/or expressions that make a person (self-identity as emphasized in psychology) or group (collective identity as pre-eminent in sociology). One can regard the awareness and the categorizing of identity as positive or as destructive.

A psychological identity relates to self-image (one’s mental model of oneself), self-esteem, and individuality. Consequently, Peter Weinreich gives the definition:

“A person’s identity is defined as the totality of one’s self-construal, in which how one construes oneself in the present expresses the continuity between how one construes oneself as one was in the past and how one construes oneself as one aspires to be in the future”; this allows for definitions of aspects of identity, such as: “One’s ethnic identity is defined as that part of the totality of one’s self-construal made up of those dimensions that express the continuity between one’s construal of past ancestry and one’s future aspirations in relation to ethnicity”.

View more – Wikipedia.org:



Imagination is the ability to produce and simulate novel objects, sensations, and ideas in the mind without any immediate input of the senses. It is also described as the forming of experiences in one’s mind, which can be re-creations of past experiences such as vivid memories with imagined changes, or they can be completely invented and possibly fantastic scenes. Imagination helps make knowledge applicable in solving problems and is fundamental to integrating experience and the learning process. A basic training for imagination is listening to storytelling (narrative) in which the exactness of the chosen words is the fundamental factor to “evoke worlds”.

Imagination is a cognitive process used in mental functioning and sometimes used in conjunction with psychological imagery. It is considered as such because it involves thinking about possibilities. The cognate term of mental imagery may be used in psychology for denoting the process of reviving in the mind recollections of objects formerly given in sense perception. Since this use of the term conflicts with that of ordinary language, some psychologists have preferred to describe this process as “imaging” or “imagery” or to speak of it as “reproductive” as opposed to “productive” or “constructive” imagination. Constructive imagination is further divided into voluntary imagination driven by the lateral prefrontal cortex (LPFC) and involuntary imagination (LPFC-independent), such as REM-sleep dreaming, daydreaming, hallucinations, and spontaneous insight. The voluntary types of imagination include integration of modifiers, and mental rotation. Imagined images, both novel and recalled, are seen with the “mind’s eye”.


Inductive reasoning

Inductive reasoning is a method of reasoning in which the premises are viewed as supplying some evidence, but not full assurance, of the truth of the conclusion. It is also described as a method where one’s experiences and observations, including what are learned from others, are synthesized to come up with a general truth. Many dictionaries define inductive reasoning as the derivation of general principles from specific observations (arguing from specific to general), although there are many inductive arguments that do not have that form.

Inductive reasoning is distinct from deductive reasoning. While, if the premises are correct, the conclusion of a deductive argument is certain, the truth of the conclusion of an inductive argument is probable, based upon the evidence given.



Infatuation or being smitten is the state of being carried away by an unreasoned passion, usually towards another person for whom one has developed strong romantic or platonic feelings. Psychologist Frank D. Cox says that infatuation can be distinguished from romantic love only when looking back on a particular case of being attracted to a person. Infatuation may also develop into a mature love. Goldstein and Brandon describe infatuation as the first stage of a relationship before developing into a mature intimacy. Whereas love is “a warm attachment, enthusiasm, or devotion to another person,” infatuation is “a feeling of foolish or obsessively strong love for, admiration for, or interest in someone or something”, a shallower “honeymoon phase” in a relationship. Dr. Ian Kerner, a sex therapist, states that infatuation usually occurs at the start of relationships, and it is “…usually marked by a sense of excitement and euphoria, and it’s often accompanied by lust and a feeling of newness and rapid expansion with a person.” Phillips describes how the illusions of infatuations inevitably lead to disappointment when learning the truth about a lover.



Inferences are steps in reasoning, moving from premises to logical consequences; etymologically, the word infer means to “carry forward”. Inference is theoretically traditionally divided into deduction and induction, a distinction that in Europe dates at least to Aristotle (300s BCE). Deduction is inference deriving logical conclusions from premises known or assumed to be true, with the laws of valid inference being studied in logic. Induction is inference from particular premises to a universal conclusion. A third type of inference is sometimes distinguished, notably by Charles Sanders Peirce, contradistinguishing abduction from induction.



Information can be thought of as the resolution of uncertainty; it is that which answers the question of “what an entity is” and thus defines both its essence and nature of its characteristics. It is associated with data, as data represents values attributed to parameters, and information is data in context and with meaning attached. Information relates also to knowledge, as knowledge signifies understanding of an abstract or concrete concept.


Information society

An information society is a society where the usage, creation, distribution, manipulation and integration of information is a significant economic, political, and cultural activity. Its main drivers are information and communication technologies, which have resulted in rapid information growth in variety and is somehow changing all aspects of social organization, including education, economy, health, government warfare and levels of democracy. The people who are able to partake in this form of society are sometimes called either computer users or even digital citizens, defined by K. Mossberger as “Those who use the Internet regularly and effectively”. This is one of many dozen internet terms that have been identified to suggest that humans are entering a new and different phase of society.


Information theory

Information theory is the scientific study of the quantification, storage, and communication of information. The field was fundamentally established by the works of Harry Nyquist and Ralph Hartley, in the 1920s, and Claude Shannon in the 1940s. The field is at the intersection of probability theory, statistics, computer science, statistical mechanics, information engineering, and electrical engineering.

A key measure in information theory is entropy. Entropy quantifies the amount of uncertainty involved in the value of a random variable or the outcome of a random process. For example, identifying the outcome of a fair coin flip (with two equally likely outcomes) provides less information (lower entropy) than specifying the outcome from a roll of a die (with six equally likely outcomes). Some other important measures in information theory are mutual information, channel capacity, error exponents, and relative entropy. Important sub-fields of information theory include source coding, algorithmic complexity theory, algorithmic information theory, and information-theoretic security.



Infrastructure is the set of fundamental facilities and systems that support the sustainable functionality of households and firms. Serving a country, city, or other area, including the services and facilities necessary for its economy to function. Infrastructure is composed of public and private physical structures such as roads, railways, bridges, tunnels, water supply, sewers, electrical grids, and telecommunications (including Internet connectivity and broadband access). In general, infrastructure has been defined as “the physical components of interrelated systems providing commodities and services essential to enable, sustain, or enhance societal living conditions” and maintain the surrounding environment.

Especially in light of the massive societal transformations needed to mitigate and adapt to climate change, contemporary infrastructure conversations frequently focus on sustainable development and green infrastructure. Acknowledging this importance, the international community has created policy focused on sustainable infrastructure through the Sustainable Development Goals, especially Sustainable Development Goal 9 “Industry, Innovation and Infrastructure”.



Insight is the understanding of a specific cause and effect within a particular context. The term insight can have several related meanings:

a piece of information
the act or result of understanding the inner nature of things or of seeing intuitively (called noesis in Greek)
an introspection
the power of acute observation and deduction, discernment, and perception, called intellection or noesis
An understanding of cause and effect based on the identification of relationships and behaviors within a model, context, or scenario (see artificial intelligence)



Instinct or innate behaviour[citation needed] is the inherent inclination of a living organism towards a particular complex behaviour. The simplest example of an instinctive behavior is a fixed action pattern (FAP), in which a very short to medium length sequence of actions, without variation, are carried out in response to a corresponding clearly defined stimulus.



Insurance is a means of protection from financial loss. It is a form of risk management, primarily used to hedge against the risk of a contingent or uncertain loss.

An entity which provides insurance is known as an insurer, an insurance company, an insurance carrier or an underwriter. A person or entity who buys insurance is known as an insured or as a policyholder. The insurance transaction involves the insured assuming a guaranteed and known – relatively small – loss in the form of payment to the insurer in exchange for the insurer’s promise to compensate the insured in the event of a covered loss. The loss may or may not be financial, but it must be reducible to financial terms, and usually involves something in which the insured has an insurable interest established by ownership, possession, or pre-existing relationship.



Intellect is often referred to the rational and logical side of the human mind.

Intellect is a term used in studies of the human mind, and refers to the ability of the mind to come to correct conclusions about what is true or false, and about how to solve problems. Historically the term comes from the Greek philosophical term nous, which was translated into Latin as intellectus (derived from the verb intelligere, “to understand”, from inter, “between” and legere, “to choose”) and into French and then English as intelligence (other than intellect). Intellect is in fact considered as a branch of intelligence (see Intellect vs intelligence).



Intelligence has been defined in many ways: the capacity for logic, understanding, self-awareness, learning, emotional knowledge, reasoning, planning, creativity, critical thinking, and problem-solving. More generally, it can be described as the ability to perceive or infer information, and to retain it as knowledge to be applied towards adaptive behaviors within an environment or context.

Intelligence is most often studied in humans but has also been observed in both non-human animals and in plants. Intelligence in machines is called artificial intelligence, which is commonly implemented in computer systems using programs and, sometimes, specialized hardware.


Intelligence agency

An intelligence agency is a government agency responsible for the collection, analysis, and exploitation of information in support of law enforcement, national security, military, and foreign policy objectives.

Means of information gathering are both overt and covert and may include espionage, communication interception, cryptanalysis, cooperation with other institutions, and evaluation of public sources. The assembly and propagation of this information is known as intelligence analysis or intelligence assessment.

Intelligence agencies can provide the following services for their national governments.

Give early warning of impending crises;
Serve national and international crisis management by helping to discern the intentions of current or potential opponents;
Inform national defense planning and military operations (military intelligence);
Protect sensitive information secrets, both of their own sources and activities, and those of other state agencies;
Covertly influence the outcome of events in favor of national interests, or influence international security; and
Defense against the efforts of other national intelligence agencies (counter-intelligence).

There is a distinction between “security intelligence” and “foreign intelligence”. Security intelligence pertains to domestic threats (e.g., terrorism, espionage). Foreign intelligence involves information collection relating to the political, or economic activities of foreign states.

Some agencies have been involved in assassination, arms trafficking, coups d’état, and the placement of misinformation (propaganda) as well as other covert operations, in order to support their own or their governments’ interests.



Intention is a mental state that represents a commitment to carrying out an action or actions in the future. Intention involves mental activities such as planning and forethought.

Folk psychology explains human behavior on the basis of mental states, including beliefs, desires, and intentions. Mental mechanisms, including intention, explain behavior in that individuals are seen as actors who have desires and who attempt to achieve goals that are directed by beliefs. Thus, an intentional action is a function to accomplish a desired goal and is based on the belief that the course of action will satisfy a desire.


Intention (criminal law)

In criminal law, intent is a subjective state of mind that must accompany the acts of certain crimes to constitute a violation. A more formal, generally synonymous legal term is scienter: intent or knowledge of wrongdoing.


Intentional stance

The intentional stance is a term coined by philosopher Daniel Dennett for the level of abstraction in which we view the behavior of an entity in terms of mental properties. It is part of a theory of mental content proposed by Dennett, which provides the underpinnings of his later works on free will, consciousness, folk psychology, and evolution.


Interest (emotion)

Interest is a feeling or emotion that causes attention to focus on an object, event, or process. In contemporary psychology of interest, the term is used as a general concept that may encompass other more specific psychological terms, such as curiosity and to a much lesser degree surprise.

The emotion of interest does have its own facial expression, of which the most prominent component is having dilated pupils.


Internal medicine

Internal medicine or general internal medicine (in Commonwealth nations) is the medical specialty dealing with the prevention, diagnosis, and treatment of internal diseases. Physicians specializing in internal medicine are called internists, or physicians (without a modifier) in Commonwealth nations. Internists are skilled in the management of patients who have undifferentiated or multi-system disease processes. Internists care for hospitalized and ambulatory patients and may play a major role in teaching and research. Internal medicine and family medicine are often confused as equivalent in the Commonwealth nations (see below).

Because internal medicine patients are often seriously ill or require complex investigations, internists do much of their work in hospitals. Internists often have subspecialty interests in diseases affecting particular organs or organ systems.

Internal medicine is also a specialty within clinical pharmacy and veterinary medicine.


Internalization (sociology)

In sociology and other social sciences, internalization (or Incorporation) means an individual’s acceptance of a set of norms and values (established by a nation) through values and transparency.

John James Hanldy described internalization as a metaphor in which something (i.e. an idea, concept, action) moves from outside the mind or personality to a place inside of it. The structure and the happenings of society shapes one’s inner self and it can also be reversed.


International Standard Classification of Education

The International Standard Classification of Education (ISCED) is a statistical framework for organizing information on education maintained by the United Nations Educational, Scientific and Cultural Organization (UNESCO). It is a member of the international family of economic and social classifications of the United Nations.



The Internet (portmanteau of interconnected network) is the global system of interconnected computer networks that uses the Internet protocol suite (TCP/IP) to link devices worldwide. It is a network of networks that consists of private, public, academic, business, and government networks of local to global scope, linked by a broad array of electronic, wireless, and optical networking technologies. The Internet carries a vast range of information resources and services, such as the inter-linked hypertext documents and applications of the World Wide Web (WWW), electronic mail, telephony, and file sharing.


Interpersonal relationship

An interpersonal relationship is a strong, deep, or close association or acquaintance between two or more people that may range in duration from brief to enduring. The context can vary from family or kinship relations, friendship, marriage, relations with associates, work, clubs, neighborhoods, and places of worship. Relationships may be regulated by law, custom, or mutual agreement, and form the basis of social groups and of society as a whole.


Intimate relationship

An intimate relationship is an interpersonal relationship that involves physical or emotional intimacy. Although an intimate relationship is commonly a sexual relationship, it may also be a non-sexual relationship involving family, friends, or acquaintances.

Emotional intimacy involves feelings of liking or loving one or more people, and may result in physical intimacy. Physical intimacy is characterized by romantic love, sexual activity, or other passionate attachment. These relationships play a central role in the overall human experience. Humans have a general desire to belong and to love, which is usually satisfied within an intimate relationship. Such relationships allow a social network for people to form strong emotional attachments.



Intuition is the ability to acquire knowledge without recourse to conscious reasoning. Different writers give the word “intuition” a great variety of different meanings, ranging from direct access to unconscious knowledge, unconscious cognition, inner sensing, inner insight to unconscious pattern-recognition and the ability to understand something instinctively, without the need for conscious reasoning.

The word intuition comes from the Latin verb intueri translated as “consider” or from the late middle English word intuit, “to contemplate”.



An invention is a unique or novel device, method, composition or process. The invention process is a process within an overall engineering and product development process. It may be an improvement upon a machine or product or a new process for creating an object or a result. An invention that achieves a completely unique function or result may be a radical breakthrough. Such works are novel and not obvious to others skilled in the same field. An inventor may be taking a big step toward success or failure.



Itch (also known as pruritus or automatic tickle) is a sensation that causes the desire or reflex to scratch. Itch has resisted many attempts to be classified as any one type of sensory experience. Itch has many similarities to pain, and while both are unpleasant sensory experiences, their behavioral response patterns are different. Pain creates a withdrawal reflex, whereas itch leads to a scratch reflex.