How do colours, pictures, size and layout add to a poster's message, and how do I explain their effect?
Analyse the images and design features of a visual text, explaining how colour, pictures, size and layout add to the message and affect the reader
How to analyse the images and design of a visual text: explaining how colour, pictures, size and layout add to the message and affect the reader, not just describing what is there.
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What this dot point is asking
SEAB wants you to analyse the images and design of a visual text: to explain how features like colour, pictures, size and layout add to the message and affect the reader. These questions appear in Visual Text Comprehension on Paper 2, often as "explain how the design..." or "what is the effect of...". As with language for effect, the key is to explain the effect, not just describe what is there. Designers choose colours, images and sizes deliberately, and your job is to say what each choice does for the reader and the message.
The answer
Design choices are deliberate
Everything on a poster is chosen for a reason: the colours, the main image, the size of the words, the layout. Nothing is there by accident. When a question asks about design, assume each feature has a purpose, and work out what it adds to the message and how it makes the reader feel.
Colour creates mood and meaning
Colour carries meaning and sets a mood. Red often suggests danger, urgency or strong feeling. Green suggests nature, health or safety. Dark colours create a serious or gloomy mood; bright colours feel cheerful and lively. Explain the effect: "the dark grey background creates a serious, gloomy mood that suits a warning."
Images make the message concrete
The main image shows the message in a way words cannot. A damaged lung makes the harm of smoking real; a smiling family makes a message about togetherness warm. Explain what the image makes the reader see or feel, and how it supports the headline.
Size and layout guide the eye
Size shows importance: the biggest words or image are what the reader sees first, so designers make the key message large. Layout guides the eye through the poster, often from a bold headline at the top down to the details. Explain how size and layout draw attention to the most important part.
Examples in context
Example 1. A warning poster. A poster about road accidents uses a dark background, a shocking image of a damaged car, and the word "SLOW" in large red letters. The dark colour sets a serious mood, the image makes the danger real, and the big red word grabs attention and signals urgency, so the design makes the reader take the warning seriously.
Example 2. A charity appeal. A poster for a children's charity uses soft, warm colours, a large photo of a hopeful child, and a gentle headline. The warm colours create a caring, emotional mood, the image of the child makes the reader feel sympathy, and the layout leads the eye from the child to the call to donate, so the design encourages giving.
Try this
Cue. Explain the effect of using bright green and images of trees on an environmental poster. Green suggests nature and health, and the trees make the message about protecting the environment concrete, creating a fresh, positive mood that supports the cause.
Cue. A student writes "the word is big" with no more. What should they add? The effect: that the large size makes the word the first thing the reader sees, drawing attention to the key part of the message.
Cue. Explain why red is often used for warning words. Red suggests danger, urgency and strong feeling, so it makes a warning stand out and signals to the reader that the message is serious and important.
Exam-style practice questions
Practice questions written in the style of SEAB exam questions on this dot point, with worked answer explainers. The year tag is the paper they imitate, not the source.
Original3 marksA poster warning about the dangers of smoking uses a dark grey background, a large image of a damaged lung, and the word 'STOP' in big red letters. Explain how these design choices add to the poster's message.Show worked answer →
The design choices make the warning feel serious and alarming. The dark grey background creates a gloomy, negative mood that suits a warning about harm. The large image of a damaged lung shocks the reader and shows the real effect of smoking, making the danger feel concrete. The word "STOP" in big red letters stands out and grabs attention, with red suggesting danger and urgency.
Together these choices make the reader take the warning seriously and feel that smoking is harmful.
What markers reward: explaining the effect of each design choice (colour, image, size) on the reader and how it supports the message, rather than only describing what the poster looks like.
Original2 marksExplain why design features like colour and size are used in posters, and describe the effect of one colour and one design choice.Show worked answer →
Design features like colour and size are used to grab attention, set a mood, and make the message clearer and more powerful. Designers choose them deliberately to affect how the reader feels and what they notice first.
One colour: red often suggests danger, urgency or strong feeling, which is why it is used in warnings and important words. One design choice: making a word or image large makes it the first thing the reader sees, drawing attention to the most important part of the message.
What markers reward: understanding that design choices are deliberate and affect the reader, and explaining the effect of a colour (such as red for danger) and a feature (such as large size for emphasis).
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