Does your child think he or she is too old for a booster seat? Think twice before you remove it from the car, says new research published in the journal Pediatrics. In a study of more than 7,000 children ages 4 to 8 who were restrained in the back seat of a car that crashed, only 30 percent were secured in a booster seat. These children were 45 percent less likely to suffer injuries than children in a traditional seatbelt. The booster seat gives your child the lift needed to ensure your car’s seatbelt is providing the necessary protection. The National Highway Traffic Safety Administration recommends booster seats for all children up to age 8 or 4 feet 9 inches tall.