LSN : Daily Signals : Adolescence extends to early 30s, new five-stage brain map reveals

Why smartphone-free is becoming a Christmas gift rule for kids

Smartphone-free Christmas, UK

UK – Grassroots organisation Smartphone Free Childhood has launched a nationwide Christmas campaign urging parents to delay giving smartphones to their children. The movement has grown rapidly over the past 18 months and won a coveted pro bono slot on the JCDecaux Community Channel, enabling it to roll out billboards across hundreds of UK sites from London to Glasgow during the peak gifting season.

Developed with Pablo London, the creative campaign re-imagines nostalgic festive scenes subtly interrupted by the glow of a smartphone. The billboards are supported by printed Christmas cards that echo the campaign visuals and are available free on the Smartphone Free Childhood website, encouraging families to share the message with peers, teachers and even MPs.

The campaign reflects growing concerns about the impact of technology, particularly smartphones, on children. Our latest Communities report, Gen Z Parents, delves into the tech anxieties of young parents and the strict guardrails they’re putting in place to protect their children’s attention spans and mental wellbeing from the negative effects of technology, while Teens, Tech and Tapping Out charts the rise of this movement.

Strategic opportunity

Align with this emerging parental mindset and growing movement by championing analogue-first family experiences – from traditional toys to retail activations – that help parents delay digital tech adoption and build brand loyalty through shared offline moments

Adolescence extends to early 30s, new five-stage brain map reveals

UK – New research mapping how the brain’s wiring shifts across life suggests adolescence doesn’t end until around age 32. The University of Cambridge study is based on MRI scans from 4,000 people aged up to 90, and identifies five distinct brain phases, with pivotal transition points at ages nine, 32, 66 and 83.

The findings were published in Nature Communications, showing that the brain’s wiring ‘is not one steady pattern, there are fluctuations and phases of brain rewiring’, according to lead author Dr Alexa Mousley. After a childhood period of rapid growth and synapse pruning, the brain enters a prolonged adolescent phase marked by ‘ruthless efficiency’, peaking in the early 30s. This stage also coincides with the greatest vulnerability to mental health disorders.

From 32 to 66, the brain moves into a long, stable adulthood period before shifting into early ageing as networks become more regionally fragmented. A final, more pronounced late ageing phase begins at 83.

Dr Mousley said the ages ‘align with a lot of important milestones’, while professor Tara Spires-Jones of the University of Edinburgh, who was not involved, called it ‘a very cool study’ but noted that individuals may vary.

Read our Generations topic reports to understand how these shifting life stages are reshaping consumer behaviour across age groups.

Zalando and Adidas

Strategic opportunity

If adolescence now extends to 32, brands need to rethink age-based segmentation. Products traditionally aimed at teens or early-20s may resonate with older consumers still in an exploratory life stage

Stat: Security concerns push UK shoppers to abandon digital transactions

Yaw, US

UK – Security concerns are now the biggest barrier to completing online purchases, with more than 50% of UK shoppers having abandoned a transaction due to fear of fraud, according to recent research by Burbank and YouGov.

The study highlights a widening trust gap in UK e-commerce, with brand recognition now outweighing speed. Nearly six in 10 shoppers say they will not buy from unfamiliar websites. Verification fatigue is also on the rise, with 52% finding step-heavy ID checks irritating or confusing, and almost half of 45–54-year-olds regarding pop-up security prompts as unsafe.

Consumers feel reassured by familiar online actions, with 56% being comfortable confirming their identity using a PIN. Trust remains crucial as 49% of shoppers who have abandoned purchases over fraud concerns say they would complete the transaction if the checkout process mirrored the security of an in-store card experience.

The findings point to broader challenges for retailers. While physical shoplifting continues to strain the sector, the rapid growth of e-commerce has opened new vulnerabilities, giving cybercriminals fresh opportunities to exploit consumer insecurity. Combined with cautious consumer spending – as detailed in our New Codes of Value macrotrend – this creates a fragile landscape in which brands must prioritise trust, transparency and familiar, reassuring experiences at checkout to protect conversion rates.

For more, read our Modern Burglary report.

Strategic opportunity

Retailers can increase conversions by explaining that verification steps protect shoppers from fraud, using simple messaging, visual cues or progress indicators to make security feel transparent, reassuring and easy to navigate