Stages in the use of 'like' as a discourse marker - Odato
1. Stage 1 - children use 'like' infrequently and in 'only a few syntactic positions' - mainly at the beginning of a clause: 'Like you won easily'
2. Stage 2 – children use 'like more often and in 'a greater number of positions'. Girls tended to move to this stage aged 5, boys when they were 7
3. Stage 3 - children now use it more frequently in other positions, such as before a prepositional phrase: 'Look at how yours landed like right on the target.' Again, girls moved to this stage at an earlier age than boys