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Outline Bowlby’s evolutionary theory of Attachment

According to Bowlby, attachment is an innate behavioural system that has evolved because of its survival value. Bowlby posits a ‘sensitive period’, during which an infan...

Answered by Chloe B. • Psychology tutor

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What is the difference between a one-tailed and two-tailed hypothesis? How Would you operationalise a hypothesis?

A one-tailed hypothesis predicts the direction of the results, whereas a two-tailed hypothesis does not. A two-tailed hypothesis simply states there will be an effect of the Inde...

Answered by Chloe B. • Psychology tutor

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Water is flowing into a rightcircular cone at the rate r (volume of water per unit time). The cone has radius a, altitude b and the vertex or "tip" is pointing downwards. Find the rate at which the surface is rising when the depth of the water is y.

Always a good first step to a problem like this, is to draw a diagram, making sure to label any lengths. The unknown in this question, is the rate at which the surface of water, in the cone, is rising. Ho...

Answered by Joss O. • Maths tutor

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I'm struggling to revise for the listening section of the exam? i.e how do I remember my score annotations?

It's all about making the connections between what you're hearing and what you understand is going on. Your A-Level Anthology should be heavily annotated with all important explanations in there. The best...

Answered by Cristina C. • Music tutor

2906 Views

Describe how the coronary arteries can become narrowed and explain how this can lead to a heart attack.

Eating a diet high in saturated fat has been linked to high levels of cholesterol in the blood.If there is too much cholesterol in the blood it can start to build up in the coronary arteries. This causes ...

Answered by • Biology tutor

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