smoking 10 cigarettes at once on Make a GIF More teens smoke only pot,

Different cartridges/heatsticks

Cognitive performance measures Cognitive performance was assessed using four computerized tasks drawn from the Walter Reed performance assessment battery (Thorner et al ., 1985) in the following order: Two-letter search test (ST), serial math test (MT), digit symbol substitution task, and the rapid information processing task (RIPT)

It can accumulate indoors from leaking chimneys and furnaces, back-drafting furnaces, wood stoves and fireplaces, gas stoves, gas water heaters, unvented kerosene and gas space heaters, gasoline-powered generators, vehicle exhaust from attached garages, and tobacco smoke

Let Yi represent the response vector of individual i , for each time-point up to T , on M variables, where responses for individual i at time-point t on variable m is indicated by Yitm