Calculating developer time during development process

A system comprising:

• a memory having computer readable instructions;
• and
• one or more processors for executing the computer readable instructions, the computer readable instructions controlling the one or more processors to perform operations comprising:
• retrieving, by a processor, activity data from a software development application and a plurality of input signals generated by a peripheral device;
• determining, by the processor, a causal relationship between the input data and any events described by the activity data;
• calculating, by the processor and in response to a determination of a causal relationship, a first time interval between an initial signal and a final signal of the plurality of input signals;
• comparing, by the processor, the first time interval to an estimated time interval;
• and
• determining, by the processor, a schedule of a second work item based on the comparison, wherein the first time interval relates to a first work item.

A computer program product comprising a computer readable storage medium having program instructions embodied therewith, the program instructions executable by a processor to cause the processor to perform operations comprising:

• retrieving, by a processor, activity data from a software development application and a plurality of input signals generated by a peripheral device;
• determining, by the processor, a causal relationship between the input data and any events described by the activity data;
• calculating, by the processor and in response to a determination of a causal relationship, a first time interval between an initial signal and a final signal of the plurality of input signals;
• comparing, by the processor, the first time interval to an estimated time interval;
• and
• determining, by the processor, a schedule of a second work item based on the comparison, wherein the first time interval relates to a first work item.