The second day of lab rat experiments orchestrated by Big Brother started with the Impossible Maze .

The scientists selected Becky versus Caroline, who slept in the in the large task room last night listening to confidence-boosting subliminal messages. The scientists guessed that Caroline would try the hardest, staying in the maze the longest before giving up – but they were wrong! Caroline quit the maze after 15.32 minutes whereas Becky remained in the maze for 23.20 minutes. So this means the scientists' hypothesis was wrong and they failed this section of the task.

The final task related hurdle the housemates faced today was the Cruelty Experiment. This time the roles were switched and the scientists were tested. The most intelligent, most awesome scientists (as elected by the House) selected three lab rats (Arron, Adam and Lauren) to take part in a general knowledge quiz. The scientists were ordered to administer painful electric shocks to the lab rats who answered questions incorrectly. Watching from the top secret Big Brother laboratory, the scientists could see and hear the rats’ blood curdling reactions.

But here's the twist: what the scientists didn’t know was that the shock pads were not active and the rats were acting. Feeling the 'cruelty' of their actions they stopped administering shocks at 800 volts. By doing this they passed the experiment by proving that they are humane, compassionate scientists.

So what does this mean for the housemates? The scientists correctly hypothesised six of eight experiments; this heralds another shopping task victory. They have received a premium shopping budget this week courtesy of Big Brother. The housemates deserve every bit of it, well done guys!