Personal reference: what it is and how it is used to search for work

Personal reference: what it is and how it is used to search for work

Thousands of jobs are applied for every day. Hundreds of job interviews are conducted every hour during which the job seeker has to show the best of themselves to be hired. However, if the professional interview and the curriculum vitae are two very useful tools to know the suitability of a person for a certain …

The 10 branches of biology: their objectives and characteristics

The 10 branches of biology: their objectives and characteristics

Like any self-respecting science, biology diversifies its efforts in different disciplines to be able to cover as much knowledge as possible. This is a necessary thing, because there is more and more information and knowing everything about the science of life in detail is something that can be called impossible, or for that we would …

Adaptive radiation: what it is, types and examples

Adaptive radiation: what it is, types and examples

You may have already come into contact with this concept: “adaptive radiation”, Widely used in evolutionary biology. Adaptive radiation, as the name suggests, is an adaptive biological process in which certain species can fill an ecological niche very quickly. This phenomenon of domination of the territory of certain species is called “speciation” and is part …

What to study? Tips for deciding on an academic career (or not)

What to study?  Tips for deciding on an academic career (or not)

If you are reading this, it is very possible that right now you are at that stage in life where you have to decide for the first time what area of ​​activity you are going to devote your efforts to over the next few years and you will ask a question. what to study. Some …

What is a self-report? Definition, characteristics and types

What is a self-report?  Definition, characteristics and types

Self-assessment is defined as a self-observation made by the subject of his own behavior. In a broad sense, it refers to any message, verbal or written, that a person gives about their own thoughts, feelings, perceptions or other types of manifestations. In the field of psychological assessment, self-assessment is a type of technique that allows …

Color psychology: meaning and curiosities of colors

Color psychology: meaning and curiosities of colors

the color psychology it is a field of study that aims to analyze the way we perceive and behave in different colors, as well as the emotions that these tones evoke in us. There are some subjective aspects in color psychology, so keep in mind that there may be some variation in interpretation and meaning …

Kolmogorov-Smirnov test: what it is and how it is used in statistics

Kolmogorov-Smirnov test: what it is and how it is used in statistics

In statistics, parametric and non-parametric tests are well known and used. A widely used nonparametric test is the Kolmogorov-Smirnov test, This allows you to check whether or not the sample scores follow a normal distribution. It belongs to the group of so-called goodness-of-fit tests. In this article we will know its characteristics, what it is …

Chi-square (χ²) test: what it is and how it is used in statistics

Chi-square (χ²) test: what it is and how it is used in statistics

In statistics, there are several tests to analyze the relationship between variables. Nominal variables are those that allow relationships of equality and inequality, such as gender. In this article, we will know one of the tests to analyze the independence between dummy or higher variables: the chi-square test, by the contrast of the hypotheses (Goodness-of-fit …

The 9 general properties of matter

The 9 general properties of matter

In this article you will find an explanation about general properties of matter. We will see how these have to do with the physical and chemical characteristics of bodies or objects. You will find a summary of each of these properties and examples of each. What is the problem? Before talking about the general properties …

The 15 physical and chemical properties of water

The 15 physical and chemical properties of water

Water is undoubtedly one of the most important elements for us, to the point that any form of life known until now would not have been possible without its existence. It is part of every cell in our body and we need to drink it frequently to survive. The importance of water is paramount, but …

The 12 types of petroleum products

The 12 types of petroleum products

There are many substances and elements found in nature, many of which are used by humans for multiple purposes. Some of them are used as food, others as raw material for making products or even as fuel. And among the fuels, one of the most valued to the point of being also called “black gold” …

The 7 most common nightmares: what does each one mean?

The 7 most common nightmares: what does each one mean?

We have talked in previous articles about the interpretation of dreams, the reasons why we dream and even lucid dreams. But so far we haven’t faced any nightmares either nightmares. This has happened to all of us: we wake up suddenly in the middle of a dream. We may even sweat and be afraid, as …

The 12 main social problems in Mexico

The 12 main social problems in Mexico

Mexico is a country of great beauty, full of dream landscapes and of great ecological and cultural wealth. In this country we can see ruins of the ancient heart of the Mayan (Chichén Itzá) or Mexican (Tenochtitlán) empires, up to biosphere reserves as relevant as the sanctuary of the monarch butterfly. It also has a …

90 questions and answers to broaden your knowledge

90 questions and answers to broaden your knowledge

Knowledge is generally understood as facts or the information we acquire throughout our life. Without a doubt, school is one of the places where we acquire the most knowledge; However, our own experience or the hours we spend watching television (for example, documentaries) or surfing the Internet can also provide valuable information. However, we need …

46 rare questions you won’t be able to answer

46 rare questions you won't be able to answer

People have the capacity to think and we are curious, so we frequently question things about our surroundings or ourselves. While there are many questions that make sense, there are also the rare, curious or absurd questions that are difficult to answer. Related Articles: “38 absurd and insignificant questions that you will not be able …

40 questions to think about and deal with uncertainty

40 questions to think about and deal with uncertainty

Since using reason, human beings have always posed unknowns, some of great importance and others much more mundane. The way we deal with uncertainty reveals who we are. In this article we will see different questions to ponder and ponder on different topics, With which to test both the degree of knowledge and the management …

30 impossible questions that will make you doubt

30 impossible questions that will make you doubt

Doubt is the source of wisdom. This sentence, written by René Descartes, indicates a fundamental fact. You have to doubt things in order to be able to investigate, to seek knowledge. Human beings have asked themselves and many other questions throughout their history, some transcendent and others much more mundane and everyday. But many of …

13 very difficult philosophical questions to answer

13 very difficult philosophical questions to answer

Humans often we ask ourselves questions about our existence and the world around us, thus expressing an innate tendency to reflect and analyze our being and our environment. Some of these unknowns have a simple answer, but others not so much, because there are facts that the human mind finds difficult to understand. Sometimes, moreover, …

25 stupid questions (but very difficult to answer)

25 stupid questions (but very difficult to answer)

Unanswered questions, of which you look at the interlocutor with the face of having seen a UFO pass. Stupid questions don’t always have an answer, as they are often born out of ignorance on the backs of whoever formulates them. But, What are we really talking about when we refer to a stupid question? These …

Research questions: how to approach a study, with examples

Research questions: how to approach a study, with examples

Research questions are the first step to take before starting to study something that intrigues us. In science, knowing how to specify the goal of a research is necessary to know in which direction the research should be designed and with what kind of methodologies can be explained. In psychology and other similar disciplines, such …

170 general knowledge questions and their answers

170 general knowledge questions and their answers

General knowledge questions are often asked during highly competitive exams in which it is planned to make a selection of participants (for example, in competitions). Generally, this examination is carried out in parallel with various tests which aim to measure other types of intelligence: psychotechnical verbal reasoning, psychotechnical numerical reasoning, or psychotechnical logical reasoning. These …

38 absurd and meaningless questions (with a tricky or non-obvious answer)

38 absurd and meaningless questions (with a tricky or non-obvious answer)

We humans are naturally curious and we never cease to be amazed by what surrounds us. This desire to know and to know leads us to ask ourselves questions. However, there are questions which are absurd and which make no sense. Either because they are made in an ironic or sarcastic tone, or because their …

The posture you sleep in says a lot about your personality

The posture you sleep in says a lot about your personality

Researcher Chris Idzikowsky, coordinator of the UK Sleep Institute, studied the six most common postures humans use while sleeping. The research findings revealed that each position is associated with a particular personality profile. This study complements another that analyzed the posture in which we sleep with our partner and what it tells us about the …

Why study microbiology? 5 key reasons

Why study microbiology?  5 key reasons

Not everything we see is what it is. We are surrounded by a whole world of microorganisms which are not visible to the naked eye and which influence the most basic aspects of our existence. Microbes play an important role in creating the world as we know it: They participate in phenomena such as the …

Why do cats eyes glow? Science responds

Why do cats eyes glow?  Science responds

On some occasions we have surely seen a cat at night or in the dark, highlighting the brightness of their eyes, especially when they are focused by some kind of light. Although it is not uncommon for us, it is likely that at some point we wondered why this glow, That they have their eyes …

Are there plants that can see?

Are there plants that can see?

The plant kingdom is made up of living beings who have played a key role in the formation of life in the world. Without plants, the massive production of oxygen now in the atmosphere, all generated from carbon dioxide, would not have been possible, which has allowed the emergence of other classes of multicellular beings …

Heisenberg’s uncertainty principle: what does it tell us?

Heisenberg's uncertainty principle: what does it tell us?

Imagine that a fly is constantly flying around us in concentric circles, at such a speed that we cannot follow it with the naked eye. As its buzz disturbs us, we want to know its exact location.. In order to do this, we have to develop some kind of method that allows us to see …

8 tears seen under a microscope reveal different emotions

8 tears seen under a microscope reveal different emotions

There is a scientific consensus on the types of tears that exist: basal tears (Those which are constantly secreted to lubricate the eye), reflex tears (They are secreted by detecting foreign particles in the eyes) or psychic tears, Due to intense emotional states (sadness, happiness, anger …). These three categories may seem simple, but they …