otime - Time Preferences for otree
Here is a screenshot of time with in total two blocks configured. The configuration options match the default ones as outlined below.
The following screenshot shows the same configuration with
VISUALIZE_CHOICES_AS_SLIDER set to
Configuration is done by editing the options present in
TOTAL_BUDGET = 20
This allows you to specify how much the overall budget is that can be distributed in each choice.
RANDOMIZE_BLOCKS = False
When set to
BLOCKS configured afterwards will not be displayed in the order entered inside the configuration file but in a random order. The output will still be saved as if the blocks were displayed not randomized.
VISUALIZE_CHOICES_AS_SLIDER = False
Setting this variable affects how the choices of a question in a block can be selected. When
False (default), then the player will be faced with several radio buttons to do the selection. When
True, a slider will be displayed allowing a more intuitive type of selection.
BLOCKS = [ Block( interest_rates=[1.05, 1.10, 1.15, 1.20], initial_payout_delay=0, initial_to_last_payout_delay=35, number_of_intermediate_choices=4 ), ... # more Blocks ]
BLOCKS specifies the list of overall blocks the app will display. Per block there are multiple options which can be configured:
interest_rates: These are the values that define how many questions the user will have to fill out during the experiment. The single values correspond to the total interest rate applied to the
TOTAL_BUDGET, i.e. a value of
1.10corresponds to a question where the most amount of money sooner is equal to
TOTAL_BUDGET / 1.10. The order of values given will match the questions generated.
initial_payout_delay: The number of weeks between today and the initial payout. If
initial_payout_delay = 0then the initial payout is today.
initial_to_last_payout_delay: The number of weeks between the initial payout and the last payout. As such the last payout is in
initial_payout_delay + initial_to_last_payout_delayweeks total.
number_of_intermediate_choices: The number of choices between the two fixed edge choices. The two fixed edge choices are
[Sooner: TOTAL_BUDGET / interest_rate, Later: 0]and
[Sooner: 0, Later: TOTAL_BUDGET].
The output of the app is stored per
Player in the player's
block_answers field. The field content is a string that equals a two-dimensional JSON array, as in the following example:
[ [2, 5, 7, 8], // Block 1 [1, 3, 6, 6, 7] // Block 2 ]
Each element in the outer array corresponds to the choices made by the player in the respective block, i.e. the first array element represents the choices the player made in Block 1 - here:
[2, 5, 7, 8]. The single numbers of those choice arrays correspond to the selection per question as made by the player - here:
2 as first element means that the player selected the second choice in the first question which was using the first element of the block's
The order of elements is always irrelevant of any randomization, i.e. even if
RANDOMIZE_BLOCKS was set to
True the output matches the order as per the
BLOCKS in the configuration file. The order in which those blocks were displayed during the experiment to the player is stored in the subsession's